permutation
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C1 noun /ˌpɜːrmjuˈteɪʃən/

permutation

Meaning
An arrangement or reordering of elements, often in mathematics or logic.
Example
The puzzle can be solved by trying all possible permutations of the tiles.
C1 noun prɪˈdɪk.ə.mənt

predicament

Meaning
A difficult, unpleasant, or embarrassing situation.
Example
Losing both jobs put him in a financial predicament.
C1 adjective /prəˈmɪskjuəs/

promiscuous

Meaning
Having or showing a casual and unselective approach, often used to describe indiscriminate sexual relationships.
Example
The novel depicts a character with a promiscuous lifestyle.
C1 adjective /ˈpɑːr.dən.ə.bəl/

Pardonable

Meaning
able to be forgiven; excusable
Example
His mistake was pardonable given the difficult circumstances.
C1 verb /ˈpʌməl/

pummel

Meaning
To strike repeatedly with the fists; to beat or hit forcefully.
Example
The boxer pummeled his opponent in the final round.
C1 noun /prəˌlɪf.əˈreɪ.ʃən/

proliferation

Meaning
Rapid increase in the number or amount of something; rapid multiplication or growth.
Example
The proliferation of malware is a growing concern.
C1 verb /ˈpɑːzɪt/

posit

Meaning
To assume or suggest something as a fact or basis for reasoning.
Example
The scientist posited a new theory to explain the phenomenon.
C1 noun /ˈpɑːrlər/

parlor

Meaning
A sitting room in a private house, or a shop providing specified services.
Example
They welcomed the guests into the front parlor.
C1 adjective /ˈpɜːrtɪnənt/

pertinent

Meaning
Relevant or applicable to a particular matter.
Example
She asked a pertinent question during the meeting.
C1 adjective /ˈfɒnɪk/

phonic

Meaning
relating to speech sounds or their production; connected to phonics
Example
Children learn phonic rules to read new words accurately.
C1 adjective /ˈpɛnsɪv/

pensive

Meaning
Engaged in deep or serious thought.
Example
She looked pensive as she stared out of the window.
C1 adjective /ˈpɔːrəs/

porous

Meaning
Having tiny holes that allow liquid or air to pass through.
Example
The soil is very porous and drains quickly.
C1 noun /ˈprəʊ.lɒɡ/

prologue

Meaning
an introduction to a book, play, or event
Example
The novel begins with a short prologue set in the past.
C1 verb /priːˈɛmpt/

pre-empt

Meaning
to act in advance to prevent an anticipated event from happening; forestall
Example
The government moved to pre-empt a crisis by introducing new policies.
C1 adjective /ˈpɜːrsənəbl/

personable

Meaning
having a pleasant appearance and manner; attractive and friendly
Example
The new teacher is very personable and easy to talk to.
C1 verb /prɪˈdɒmɪneɪt/

predominate

Meaning
To be the strongest, most common, or most influential element.
Example
Traditional values still predominate in the community.
C1 noun, adjective /ˌproʊlɪˈtɛəriən/

proletarian

Meaning
Relating to the working class, especially those who do not own property.
Example
The movement was rooted in proletarian struggles.
C1 adjective + noun ˌpaɪəˈnɪərɪŋ ˈmɪʃən

pioneering mission

Meaning
A groundbreaking or innovative undertaking that leads the way in a particular field.
Example
Artemis is a pioneering mission in space exploration.
C1 noun /pækt/

Pact

Meaning
a formal agreement between individuals or parties; a treaty or contract
Example
The two countries signed a peace pact to end the war.
C1 verb /ˈpæs.ɪ.faɪ/

pacify

Meaning
To quell the anger, agitation, or excitement of someone.
Example
The mother tried to pacify her crying child.
C1 adjective /ˌpæθəˈlɑːdʒɪkəl/

pathological

Meaning
Relating to disease; extreme or obsessive in a way that is abnormal.
Example
He has a pathological fear of failure.
C1 noun /ˌpɒl.iˈtek.nɪk/

polytechnic

Meaning
an educational institution offering practical and technical courses
Example
She studied engineering at a well-known polytechnic in her city.
C1 noun /ˈpreɪsiː/

precis

Meaning
A concise summary of a text or speech.
Example
The student submitted a précis of the long article.
C1 adjective /prəˈpɔːrʃənət/

proportionate

Meaning
Corresponding in size, degree, or intensity; balanced in relation.
Example
The punishment should be proportionate to the crime.
C1 noun /ˈpleɪn.tɪf/

Plaintiff

Meaning
a person who brings a case against another in a court of law; the person who initiates a lawsuit
Example
The plaintiff filed a lawsuit against the company.
C1 noun /pɪˈtaɪə/

Pitaya / Dragon fruit

Meaning
a tropical fruit with bright pink or red skin and white flesh speckled with black seeds
Example
The pitaya has a mild, sweet flavor and a unique appearance.
C1 noun ˌpriːˌɒkjʊˈpeɪʃən

preoccupation

Meaning
The state of being absorbed in thought; mental distraction.
Example
His preoccupation with work led to neglecting his personal life.
C1 adjective /ˈpʌlməˌneri/

pulmonary

Meaning
relating to the lungs
Example
The patient suffered from a serious pulmonary infection.
C1 adjective /ˌpæn.əˈmer.ɪ.kən/

Pan-American

Meaning
relating to all the countries of North, Central, and South America
Example
The Pan-American Games bring together athletes from across the continent.
C1 verb /proʊˈtrækt/

protract

Meaning
To prolong or extend in time or duration.
Example
Negotiations were protracted for several months.
C1 noun /ˈpʌndɪt/

pundit

Meaning
An expert in a particular subject or field who is frequently called upon to give opinions to the public.
Example
Political pundits debated the election results on television.
C1 noun /ˈpɛdlər/

peddler

Meaning
a person who sells goods, often traveling from place to place
Example
The peddler walked through the village selling fresh fruits.
C1 noun /ˈpæs.ɪ.fɪst/

pacifist

Meaning
a person who believes in peace and opposes war or violence
Example
She is a committed pacifist who campaigns against armed conflict.
C1 verb /ˈpɛdəl/

peddle

Meaning
To sell goods, often by going from place to place; sometimes used negatively to mean promoting an idea or product in a pushy way.
Example
Street vendors peddle handmade jewelry to tourists.
C1 noun /ˈpɪɡmənt/

pigment

Meaning
a natural or artificial substance used to give color to something
Example
The artist mixed different pigments to create the perfect shade of blue.
C1 adverb /ˈpiːs.miːl/

Piecemeal

Meaning
done or made gradually, one piece at a time; fragmentary; unsystematic
Example
The renovation was done piecemeal over several years due to budget constraints.
C1 noun /prəˈpraɪəti/

propriety

Meaning
Conformity to accepted standards of behavior or morality.
Example
He always behaved with the utmost propriety in public.
C1 verb /ˈpætər/

patter

Meaning
to make a repeated light tapping sound; to talk quickly in a rehearsed or mechanical way
Example
Rain pattered softly on the window.
C1 noun prəˈkjʊrmənt

procurement

Meaning
The action of obtaining or procuring something, especially for official purposes.
Example
The procurement of modern equipment has improved research accuracy.
C1 noun /ˌprɒvəˈkeɪʃən/

provocation

Meaning
An action or statement that is intended to make someone angry or to cause a reaction.
Example
His rude comment was a clear provocation.
C1 adjective /pæˈseɪ/

passe

Meaning
no longer fashionable or current; out of date
Example
Some trends from last decade feel utterly passé now.
C1 adjective /ˈpʌn.dʒənt/

Pungent

Meaning
sharp; strong-smelling; acrid;
Example
The pungent smell of garlic filled the kitchen.
C1 noun /pəˈraɪə/

pariah

Meaning
An outcast; someone who is rejected by society or a social group.
Example
After the scandal, he became a social pariah.
C1 noun /ˌpɑːrʃiˈæləti/

partiality

Meaning
an unfair preference or bias toward one side or person
Example
The judge was criticized for showing partiality in the case.
C1 noun /ˈpəʊstˌskrɪpt/

postscript

Meaning
an additional remark at the end of a letter or text, after the signature
Example
She added a brief postscript to thank him again.
C1 noun /ˈpetɪkoʊt/

Petti-coat

Meaning
an undergarment worn by women under a dress or skirt
Example
She wore a white petticoat under her dress.
C1 adjective /ˌpriːdɪˈspoʊzd/

predisposed

Meaning
Likely or inclined to be affected by something in advance.
Example
She is predisposed to trust people easily.
C1 verb /ˈpruːfˌriːd/

proofread

Meaning
to read written material and mark any errors
Example
She proofread the report before submission.
C1 noun /pərˈvɜr.sə.ti/

Perversity

Meaning
deliberate determination to behave in an unreasonable or unacceptable way; the quality of being contrary or obstinate
Example
His perversity in refusing help frustrated everyone.
C1 adjective /ˈpæl.ɪd/

Pallid

Meaning
pale, especially because of poor health; lacking substance or vitality
Example
His pallid complexion showed signs of illness.
C1 noun /ˈpæn.θi.ən/

pantheon

Meaning
All the gods of a religion collectively; a building dedicated to all gods.
Example
The Roman Pantheon is one of the best-preserved ancient temples.
C1 noun /ˈprɒvənəns/

provenance

Meaning
The origin or source of something.
Example
The museum verified the provenance of the ancient manuscript.
C1 verb /ˈpærəlaɪz/

paralyze

Meaning
to cause someone or something to lose the ability to move or function normally
Example
The sudden shock seemed to paralyze him.
C1 noun /ˈpæd.ək/

paddock

Meaning
a small enclosed field where horses or other animals are kept
Example
The horses were grazing in the paddock.
C1 adjective /ˈpɔɪ.njənt/

poignant

Meaning
evoking a keen sense of sadness or regret; deeply touching
Example
The movie's ending was so poignant that many in the audience were moved to tears.
C1 noun /ˌpændəˈmoʊniəm/

pandemonium

Meaning
Wild and noisy disorder or confusion; uproar.
Example
When the concert was canceled, pandemonium broke out among the crowd.
C1 noun /ˈpær.ə.kiːt/

Parakeet

Meaning
a small colorful parrot with a long tail, often kept as a pet
Example
The green parakeet learned to say hello.
C1 noun ˌpɒlɪˈneɪʃən

Pollination

Meaning
The process by which pollen is transferred from flowers, enabling plant reproduction.
Example
Butterflies play a vital role in pollination.
C1 noun /ˈpeɪθɒs/

pathos

Meaning
a quality in speech, writing, or events that evokes pity or deep emotion
Example
The documentary balanced pathos with hope, making the audience both weep and think.
C1 noun /ˈpɒlɪɡlɒt/

polyglot

Meaning
a person who knows and can use several languages
Example
She is a polyglot, fluent in English, Spanish, and Bengali.
C1 noun /ˈpɛs.tɪ.saɪd ˈrɛz.ɪ.djuː/

pesticide-residue

Meaning
Chemical remnants left over from pesticides used on crops or in soil.
Example
Excess pesticide-residue in food can be harmful to health.
C1 adjective /ˈpruː.dənt/

Prudent

Meaning
wise; careful; cautious;
Example
It's prudent to save money for the future.
C1 verb /ˈpærəfreɪz/

paraphrase

Meaning
To express the meaning of something using different words, often to make it clearer.
Example
The teacher asked the students to paraphrase the poem in their own words.
C1 adjective /ˌpɛd.əˈɡɒdʒ.ɪ.kəl/

pedagogical

Meaning
Relating to teaching and education; concerned with the methods and practice of teaching.
Example
The school adopted new pedagogical techniques to improve learning.
C1 noun proʊˈæktɪv ˈseɪvɪŋ

proactive saving

Meaning
Actively planning and setting aside money in advance to prepare for future financial needs
Example
Proactive saving ensures financial stability in old age.
C1 adjective /ˈprevələnt/

Prevalent

Meaning
widespread; existing very commonly; generally occurring
Example
Smoking is still prevalent among teenagers despite health warnings.
C1 noun /ˈpoʊlstər/

pollster

Meaning
a person or organization that conducts surveys to gauge public opinion
Example
The pollster predicted a close election outcome.
C1 noun /ˈpɛdəstəl/

pedestal

Meaning
the base or support on which a statue or object stands
Example
The statue was placed on a marble pedestal.
C1 noun /ˈpriːˌkɜrsər/

precursor

Meaning
Something or someone that comes before another and indicates the approach of something else.
Example
The steam engine was a precursor to modern trains.
C1 noun prəˈtɛk.ʃə.nɪ.zəm

protectionism

Meaning
The theory or practice of shielding a country's domestic industries from foreign competition by taxing imports.
Example
The government's protectionism helped local businesses grow.
C1 noun /ˈplɛθərə/

plethora

Meaning
an excessive amount of something
Example
She has a plethora of books on her shelf.
C1 noun /ˈpɪl.fər.ɪdʒ/

Pilferage

Meaning
the theft of small amounts or items, especially from one's workplace
Example
The company installed cameras to prevent pilferage.
C1 verb /plʌm/

plumb

Meaning
to measure the depth of water or examine closely
Example
They used a line to plumb the depth of the lake.
C1 verb /ˌpoʊstˈdeɪt/

postdate

Meaning
To assign a date later than the actual date to a document or event.
Example
She postdated the check to next month.
C1 noun /ˌpɜːsəˈnælɪzeɪʃən/

personalization

Meaning
The action of making something personal or individual; customization.
Example
Personalization in marketing improves customer engagement.
C1 noun /ˈpræɡ.mə.tɪ.zəm/

pragmatism

Meaning
A practical approach to problems and affairs; dealing with things sensibly and realistically.
Example
His pragmatism helped solve the financial crisis.
C1 adjective /ˈprɪnsəpəld/

principled

Meaning
acting in accordance with moral or ethical standards
Example
He is a principled leader who always puts honesty first.
C1 verb /plɒd/

plod

Meaning
to work slowly and steadily, often with effort or difficulty
Example
He plodded through his homework despite feeling tired.
C1 adjective /ˈpjuːtrɪd/

putrid

Meaning
decayed and emitting a foul smell
Example
The garbage smelled putrid after days in the sun.
C1 noun /ˌfəʊtəʊˈsɪnθɛtɪk ɪˈfɪʃənsi/

photosynthetic efficiency

Meaning
The measure of how effectively plants convert light energy into chemical energy through the process of photosynthesis, directly affecting plant growth and crop yield.
Example
Improving photosynthetic efficiency can increase crop yields.
C1 noun /ˈpoʊtənsi/

potency

Meaning
The power or ability of something to affect or influence; strength or effectiveness.
Example
The potency of the new medicine amazed the doctors.
C1 adjective /ˈpriːmə/

prima

Meaning
first or most important; excellent
Example
She was treated as the prima ballerina of the troupe.
C1 noun /ˈpɪk.æks/

Pick-axe

Meaning
a tool with a heavy metal head and long handle used for breaking up hard ground or rock
Example
The miner used a pick-axe to break through the rocky surface.
C1 adjective /ˈpjuː.ni/

puny

Meaning
Small, weak, or insignificant.
Example
He felt puny compared to his stronger classmates.
C1 verb /ˈprɒfəsaɪ/

prophesy

Meaning
to state or predict that something will happen in the future, especially as if divinely inspired
Example
The monk prophesied that peace would return to the land.
C1 noun /ˈpæl.ə.tə.bəl miːt/

Palatable meat

Meaning
Meat that is pleasant to taste; appetizing meat dish
Example
The chef prepared palatable meat dishes for the dinner party.
C1 adjective /pɒˈstɪəriər/

posterior

Meaning
Situated at or toward the back; later in time.
Example
The posterior part of the brain controls vision.
C1 noun /ˈpɔːpər/

pauper

Meaning
A very poor person.
Example
The pauper begged for food on the street corner.
C1 noun /ˈpriːsɪŋkt/

precinct

Meaning
A district or area within the boundaries of a city, often for police or electoral purposes.
Example
She went to vote at her local precinct.
C1 noun prəˈpʌl.ʃən

propulsion

Meaning
The action of driving or pushing forward.
Example
Jet engines provide propulsion for aircraft to travel long distances.
C1 verb pɚˈpɛtʃ.u.eɪt

perpetuate

Meaning
To keep something continuously running or maintain it for a long time.
Example
The media can sometimes perpetuate harmful stereotypes.
C1 adjective /ˈpjuː.nɪ.tɪv/

punitive

Meaning
Inflicting or intended as punishment.
Example
The company faced punitive measures for violating the law.
C1 adjective /pəˈnɪnsjələr/

peninsular

Meaning
Relating to or resembling a peninsula.
Example
The peninsular region is surrounded by water on three sides.
C1 adjective /ˌpæθəˈdʒɛnɪk/

pathogenic

Meaning
Capable of causing disease.
Example
Some bacteria are harmless, while others are highly pathogenic.
C1 verb /ˈpɒstʃʊleɪt/

postulate

Meaning
to suggest or assume that something is true as the basis for reasoning or discussion
Example
Scientists postulate that life exists on other planets.
C1 noun /ˈpɔːr.kjə.paɪn/

Porcupine

Meaning
a large rodent with defensive spines or quills on its body
Example
The porcupine raised its quills when threatened.
C1 verb /ˈpoʊ.lə.raɪz/

polarize

Meaning
to divide or cause to divide into two sharply contrasting groups or sets of opinions or beliefs
Example
The controversial decision polarized public opinion.
C1 noun ˌprəʊ.baɪˈɒt.ɪk

probiotic

Meaning
Live microorganisms that provide health benefits when consumed in adequate amounts.
Example
Yogurt is a natural source of probiotics that aid digestion.
C1 noun /ˈprɒspɛktər/

prospector

Meaning
a person who searches for mineral deposits, especially gold
Example
The prospector spent years in the mountains searching for gold.
C1 noun ˌpraɪ.vɪ.taɪˈzeɪ.ʃən

privatization

Meaning
The transfer of a business, industry, or service from public to private ownership and control.
Example
The privatization of state-owned companies increased efficiency.
C1 adjective /ˈpɛndənt/

pendent

Meaning
hanging down or suspended
Example
The pendent branches touched the ground.
C1 adjective /prɪˈpɒstərəs/

preposterous

Meaning
completely ridiculous or absurd; contrary to reason or common sense
Example
The idea that pigs could fly is preposterous.
C1 noun /ˌprəʊ.baɪˈɒt.ɪks/

probiotics

Meaning
Live microorganisms that, when administered in adequate amounts, confer health benefits to the host, especially for digestive health.
Example
Probiotics improve digestion and enhance gut health.
C1 noun /ˈpraɪ.mər/ (US), /ˈprɪm.ər/ (UK)

primer

Meaning
A basic introductory book or a substance used to prepare a surface for painting.
Example
He read a primer on programming before starting his course.
C1 noun /pɛnˈtæθlɒn/

pentathlon

Meaning
An athletic contest featuring five different events.
Example
She trained hard to compete in the modern pentathlon.
C1 noun /ˈpoʊʃən/

potion

Meaning
a liquid with healing, magical, or poisonous properties
Example
The witch gave the hero a healing potion.
C1 verb /priːˈɛmpt/

preempt

Meaning
To take action in order to prevent something from happening; to take the place of something.
Example
The government acted quickly to preempt a financial crisis.
C1 noun /ˌpɒməˈdɔːrəʊ/

pomodoro

Meaning
A time management technique that uses a timer to break down work into intervals.
Example
The Pomodoro technique improves productivity.
C1 noun /ˈprɛəri/

prairie

Meaning
A large open area of grassland, especially in North America.
Example
The bison roamed freely across the prairie.
C1 adjective /ˈpɑːndərəs/

ponderous

Meaning
slow and clumsy because of great weight; dull and labored
Example
The ponderous lecture made it hard for students to stay awake.
C1 adjective /ˈpɪt.i.ləs/

pitiless

Meaning
showing no pity or compassion; cruel
Example
The pitiless ruler ignored the suffering of his people.
C1 verb /ˈpɜːrsɪkjuːt/

persecute

Meaning
to treat someone cruelly or unfairly, especially because of their religion, race, or beliefs
Example
Many people were persecuted for their faith during that time.
C1 adjective /prɪˈkoʊʃəs/

precocious

Meaning
Showing advanced development or maturity at an unusually early age.
Example
The precocious child was reading novels at the age of five.
C1 adjective /ˈpɑːm.pəs/

Pompous

Meaning
showing off; pretentious; overly grand
Example
His pompous attitude annoyed everyone at the meeting.
C1 verb /proʊˈtruːd/

protrude

Meaning
To stick out or extend beyond a surface.
Example
A nail was protruding from the wooden board.
C1 noun ˈprɒdʒ.ə.ni

progeny

Meaning
A descendant or the descendants of a person, animal, or plant; offspring.
Example
The philosopher's teachings have influenced many generations of progeny.
C1 adjective /ˈpær.ə.nɔɪd/

paranoid

Meaning
having an unreasonable fear or suspicion of others
Example
She became paranoid after hearing strange noises outside.
C1 verb /praɪ/

pry

Meaning
to look closely into something; to try to find out private information
Example
She tried to pry into her neighbor’s private life.
C1 noun /plæsˈtɪsəti/

plasticity

Meaning
the quality of being easily shaped or molded; adaptability
Example
The brain's plasticity allows it to adapt after injury.
C1 adjective /prɪˈsɪpɪtəs/

precipitous

Meaning
Extremely steep or sudden; done quickly without careful consideration.
Example
The hikers struggled to climb the precipitous slope.
C1 adjective /praɪˈmɔːrdiəl/

primordial

Meaning
Existing at or from the beginning of time; fundamental and original.
Example
Scientists study the primordial soup from which life emerged.