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C1 verb /pərˈtɜːrb/

perturb

Meaning
To disturb or unsettle greatly in mind.
Example
The sudden noise perturbed the students during the exam.
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 /pəˈθɒlədʒi/

pathology

Meaning
the scientific study of diseases, their causes, processes, and effects on the body
Example
Advances in pathology helped the doctors identify the rare infection quickly.
C1 adjective /ˈpɛtjʊlənt/

petulant

Meaning
Childishly sulky or bad-tempered.
Example
The child became petulant when denied more candy.
C1 noun /ˌpɜːrspəˈreɪʃn/

perspiration

Meaning
The process of sweating.
Example
Heavy exercise causes perspiration.
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 adjective /ˌpæθəˈdʒɛnɪk/

pathogenic

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

pivot

Meaning
A significant change in business strategy or direction.
Example
The company decided to pivot its business strategy.
C1 verb /per/

pare

Meaning
to cut away the outer covering or reduce something gradually
Example
She pared the apple before eating it.
C1 noun /pɪˌdɛs.tri.ə.naɪˈzeɪ.ʃən/

pedestrianization

Meaning
Making areas pedestrian-friendly, closing any area to vehicle traffic and making it open only for pedestrians.
Example
The pedestrianization of city centers reduces pollution.
C1 adjective /prɪˈzʌmp.tʃu.əs/

presumptuous

Meaning
Overconfident, rude, or taking liberties without permission.
Example
It was presumptuous of him to make that decision without consulting others.
C1 adjective /ˈpɑːr.dən.ə.bəl/

Pardonable

Meaning
able to be forgiven; excusable
Example
His mistake was pardonable given the difficult circumstances.
C1 adjective /ˈpɪt.i.ləs/

pitiless

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

parentage

Meaning
The identity and origins of one's parents; descent or lineage.
Example
Her noble parentage gave her access to the royal court.
C1 verb /ˌpriːˈmɛdɪteɪt/

premeditate

Meaning
to think about and plan something (especially a crime) beforehand
Example
The suspect was accused of premeditating the crime.
C1 verb ˈplʌmɪtɪŋ

plummeting

Meaning
Falling or dropping suddenly and steeply; decreasing rapidly
Example
The fertility rate in Bangladesh is plummeting.
C1 noun /ˈprɒfəsi/

prophecy

Meaning
a prediction or message about the future, often believed to be divinely inspired
Example
The prophecy foretold the rise of a great leader.
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 noun prɪˈsɪʒ.ən ˈæɡ.rɪ.kʌl.tʃər

precision agriculture

Meaning
The technique of conducting agricultural work using advanced technology.
Example
Precision agriculture optimizes resource use and increases efficiency.
C1 adjective /prəˈfeɪn/

profane

Meaning
showing disrespect or contempt for sacred things; irreverent or vulgar
Example
His jokes were considered too profane for the ceremony.
C1 verb /ˈprɪkəl/

prickle

Meaning
to cause a slight stinging or tingling sensation on the skin
Example
Her skin began to prickle in the cold wind.
C1 noun /pərˈkʌʃən/

percussion

Meaning
Musical instruments that are played by striking, shaking, or scraping, such as drums or cymbals.
Example
The percussion section added rhythm and energy to the orchestra.
C1 verb prəˈpel

propel

Meaning
To drive, push, or cause to move in a particular direction, typically forward.
Example
Lack of proper guidance can propel adolescents toward delinquency.
C1 noun /ˌprɒpəˈɡeɪʃən/

propagation

Meaning
The action of spreading and promoting an idea, theory, etc.
Example
The propagation of ideas through social media is rapid.
C1 noun /pəˈsweɪsɪvnes/

persuasiveness

Meaning
The quality of being good at persuading someone to do or believe something.
Example
Her persuasiveness convinced the team to follow her suggestions.
C1 verb /ˈpeɪtrənaɪz/

patronize

Meaning
to treat someone in a condescending way; to be a regular customer of a business
Example
Don't patronize me with your fake sympathy.
C1 noun /ˌpiːdiˈætrɪks/

pediatrics

Meaning
the branch of medicine dealing with the health and medical care of children
Example
She decided to specialize in pediatrics after medical school.
C1 adjective /prəˈfɛtɪk/

prophetic

Meaning
accurately predicting or describing what will happen in the future
Example
His prophetic words came true after many years.
C1 verb /praʊl/

prowl

Meaning
To move around quietly and secretly, especially while hunting or searching.
Example
The cat prowled around the garden at night.
C1 noun ˈfeɪz.aʊt

phase-out

Meaning
A gradual reduction and eventual elimination of something.
Example
A phase-out of fossil fuels was agreed upon.
C1 noun /ˌprɒk.ləˈmeɪ.ʃən/

Proclamation

Meaning
an official public announcement, especially one made by someone in authority
Example
The king issued a proclamation declaring peace.
C1 adjective /priˈɛmptɪv/

preemptive

Meaning
Serving or intended to prevent something by taking action first.
Example
The government took preemptive measures to control inflation.
C1 verb /ˈpɜːrpɔːrt/

purport

Meaning
to claim or profess something, often falsely
Example
The document purports to be an official government report.
C1 verb /ˈpɜːrpətreɪt/

perpetrate

Meaning
To commit or carry out, typically a harmful, illegal, or immoral act.
Example
The hackers perpetrated a massive cyber attack on the company.
C1 adjective prəˈtræk.tɪd

protracted

Meaning
Lasting for a long time or longer than expected or usual.
Example
The negotiations were protracted over months.
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 noun /ˈpɔːpər/

pauper

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

prerogative

Meaning
a special right or privilege exclusive to a particular person or group
Example
It is the manager’s prerogative to make the final decision.
C1 adjective /ˈper.ɪ.ləs/

perilous

Meaning
Full of danger or risk; hazardous and threatening.
Example
The explorers took a perilous journey.
C1 noun /ˌplɔː.zəˈbɪl.ə.ti/

plausibility

Meaning
The quality of being reasonable or probable.
Example
The plausibility of his explanation convinced the jury.
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 verb /pəˈveɪd/

pervade

Meaning
to spread through and be present in every part of something
Example
The smell of fresh flowers pervaded the entire room.
C1 adjective /pləˈtɒnɪk/

platonic

Meaning
relating to a close relationship that is not romantic or sexual
Example
They have a platonic friendship that has lasted for years.
C1 noun /ˈpʊlpɪt/

pulpit

Meaning
a raised platform in a church from which the preacher delivers a sermon
Example
The pastor stood at the pulpit to address the congregation.
C1 adjective /ˈpæs.ə.bəl/

passable

Meaning
good enough to be accepted, though not excellent
Example
The road is barely passable after the storm.
C1 adjective /ˈprɪs.tiːn/

pristine

Meaning
In its original condition; unspoiled, clean, and fresh.
Example
The forest remains in a pristine condition.
C1 noun /prəˈpɛlənt/

propellant

Meaning
A substance that drives or pushes something forward, especially fuel in rockets or engines.
Example
The rocket uses a liquid propellant to launch into space.
C1 noun /pəˈrɛnθəsɪs/

parenthesis

Meaning
A pair of curved marks ( ) used to enclose words or numbers; also an interruption or digression in speech or writing.
Example
The explanation was given in a parenthesis within the text.
C1 verb /pɜːrtʃ/

perch

Meaning
To sit or rest on something high or narrow.
Example
The bird perched on the fence.
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 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 adjective prɪˈkeə.ri.əs

precarious

Meaning
Not securely held or in position; dependent on chance; uncertain.
Example
His financial situation is precarious.
C1 noun /ˈsuːdənɪm/

pseudonym

Meaning
a fictitious name used by an author instead of their real name
Example
Mark Twain was the pseudonym of Samuel Clemens.
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 /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 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 verb /pləˈkeɪt/

placate

Meaning
to make someone less angry or hostile; to calm or soothe
Example
He tried to placate the angry customer with a refund.
C1 adjective /prəˈdɪdʒəs/

prodigious

Meaning
remarkably or impressively great in extent, size, or degree
Example
The team made a prodigious effort to complete the project on time.
C1 noun /ˈpleɪdʒərɪzəm/

plagiarism

Meaning
the practice of taking someone else's work or ideas and passing them off as one's own
Example
The student was expelled for committing plagiarism in his essay.
C1 noun /ˈpraɪməsi/

primacy

Meaning
the state of being first in importance or authority
Example
The primacy of education cannot be denied.
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 /ˈplɛθərə/

plethora

Meaning
an excessive amount of something
Example
She has a plethora of books on her shelf.
C1 adjective /ˈpjuː.nɪ.tɪv/

punitive

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

passe

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

playwright

Meaning
a person who writes plays
Example
Shakespeare is considered the greatest playwright of all time.
C1 noun /ˈpiː.kɒk ˈflaʊ.ər/

Peacock flower

Meaning
a tropical tree with bright orange and red flowers that resemble a peacock's tail
Example
The peacock flower tree blooms with stunning orange flowers in summer.
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 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 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 verb /ˈpæmpər/

pamper

Meaning
to treat with excessive care and attention; to spoil
Example
Parents often pamper their first child.
C1 noun/verb /pɔːr/

pore

Meaning
As a noun: a tiny opening in the skin or surface. As a verb: to study something carefully.
Example
She pored over the documents for hours before making a decision.
C1 adjective /ˈpent ʌp/

Pent-up

Meaning
suppressed; restrained; confined
Example
He had pent-up anger that finally exploded.
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 adjective /fəˈnɛtɪk/

phonetic

Meaning
relating to the sounds of speech or pronunciation
Example
The teacher taught the students the phonetic spelling of difficult words.
C1 adjective /pəˈrɛniəl/

perennial

Meaning
lasting or existing for a long time, or recurring continually
Example
Climate change is a perennial concern for scientists.
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 noun /ˈpiːɒn/

peon

Meaning
a low-ranking worker, often performing menial tasks
Example
The office peon delivered the files to each department.
C1 noun ˈprɛvələns

prevalence

Meaning
The fact or condition of being widespread; the extent to which something exists or occurs
Example
The prevalence of aging issues requires immediate attention.
C1 noun /ˈpen.əns/

Penance

Meaning
punishment that you accept for doing something wrong; an act of showing that you are sorry for sin
Example
The monk performed penance for his past mistakes.
C1 adjective/verb /ˈprɒstreɪt/

prostrate

Meaning
lying stretched out on the ground with one's face downward, often as a sign of submission or exhaustion
Example
He lay prostrate on the ground after the long battle.
C1 noun ˌprɒf.ɪ.təˈbɪl.ɪ.ti

profitability

Meaning
The degree to which a business or activity yields profit or financial gain.
Example
Increasing sales and reducing costs boosted profitability.
C1 noun /ˈpɜːrpɪtreɪtər/

perpetrator

Meaning
a person who commits a harmful, illegal, or immoral act
Example
The police arrested the perpetrator of the crime.
C1 adjective /pəˈrɪfərəl/

peripheral

Meaning
Relating to or situated on the edge or outer parts of something.
Example
The town is located on the peripheral area of the city.
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 verb /prəˈfes/

profess

Meaning
to declare or claim openly; to state one's belief
Example
He professes his love for classical music.
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 /praɪˈmiːvəl/

primeval

Meaning
Relating to the earliest ages in history; ancient and primitive.
Example
The explorers ventured into the primeval forest untouched by humans.
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 prəˈpɛn.sə.ti

propensity

Meaning
An inclination or natural tendency to behave in a particular way.
Example
He has a propensity for taking risks in business.
C1 noun /ˈpɛdɪɡriː/

pedigree

Meaning
the recorded ancestry or lineage of a person, family, or animal; the history or origin of something
Example
The dog has a pedigree that traces back several generations.
C1 noun /ˈpɜːrkəleɪtər/

percolator

Meaning
A device used for brewing coffee by continually cycling boiling water through coffee grounds.
Example
She made a fresh pot of coffee using the percolator.
C1 verb /priːn/

preen

Meaning
To groom or dress oneself with care; to show pride in one's appearance.
Example
She preened in front of the mirror before leaving for the party.
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 /ˌsaɪkoʊˈθɛrəpi/

psychotherapy

Meaning
The treatment of mental disorder by psychological rather than medical means.
Example
She attended weekly psychotherapy sessions to cope with her anxiety.
C1 noun /ˌpɪɡ.menˈteɪ.ʃən/

pigmentation

Meaning
The natural coloring of animal or plant tissue.
Example
Excessive rubbing can cause pigmentation issues.
C1 noun /pəˈrɪfəri/

periphery

Meaning
The outer edge or boundary of an area or object.
Example
The soldiers were stationed at the periphery of the camp.
C1 noun /pæŋ/

pang

Meaning
a sudden sharp feeling of pain or emotional distress
Example
She felt a pang of guilt after the argument.
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.
C1 adjective /ˈpɛndənt/

pendent

Meaning
hanging down or suspended
Example
The pendent branches touched the ground.
C1 noun /pləˈsiːboʊ/

placebo

Meaning
a substance with no therapeutic effect, used as a control in testing new drugs
Example
The patient was given a placebo to compare the effect of the real drug.
C1 adjective /ˌfɪl.hɑːrˈmɒn.ɪk/

philharmonic

Meaning
relating to a symphony orchestra or its music
Example
The philharmonic orchestra performed a stunning rendition of Beethoven's Ninth Symphony.
C1 noun /ˈpɪt.əns/

pittance

Meaning
a very small or inadequate amount of money
Example
She worked long hours for a mere pittance.
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 verb /pərˈteɪn/

pertain

Meaning
to relate or have reference to something
Example
The rules pertain to all students in the school.
C1 adjective /ˌfɪl.ænˈθrɒp.ɪk/

philanthropic

Meaning
showing concern for the welfare of others; generous and charitable
Example
She is known for her philanthropic activities in the city.
C1 noun /fɪˈlæn.θrə.pi/

philanthropy

Meaning
the desire to promote the welfare of others, often expressed by the generous donation of money to good causes
Example
Philanthropy has helped improve healthcare in many developing countries.
C1 verb pleɪɡd

plagued

Meaning
Troubled or afflicted persistently by problems or difficulties.
Example
People are plagued by anxiety and depression.
C1 noun /pɔl/

Pall

Meaning
a cloth spread over a coffin; a dark covering that creates a gloomy atmosphere
Example
A pall of smoke hung over the burning building.
C1 adjective /ˈpəʊtəbl/

potable

Meaning
safe to drink; drinkable
Example
The villagers did not have access to potable water.
C1 adjective /prəˈvoʊkɪŋ/

Provoking

Meaning
causing anger or strong reaction; irritating; stimulating
Example
His provoking comments made everyone angry.
C1 noun /ˈpɪntʃərz/

pinchers

Meaning
a tool used for gripping or squeezing objects
Example
Use the pinchers to remove the hot coal safely.
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 adjective /priːˈɛmɪnənt/

preeminent

Meaning
Surpassing all others; very distinguished in some way.
Example
She is a preeminent scientist in the field of genetics.
C1 adjective /ˈpæl.ə.tə.bəl/

palatable

Meaning
pleasant or acceptable to the taste, mind, or feelings
Example
The meal was simple but quite palatable.
C1 verb /pɑːrs/

parse

Meaning
to analyze a sentence or text grammatically or logically
Example
The software can parse large amounts of text data efficiently.
C1 verb /piːv/

peeve

Meaning
To annoy or irritate someone.
Example
His constant interruptions really peeve me.
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 adjective /ˈpiːs.ə.bəl/

Peaceable

Meaning
peaceful; inclined to avoid conflict
Example
The peaceable protest ended without any violence.
C1 adjective /ˈpjuː.ni/

puny

Meaning
Small, weak, or insignificant.
Example
He felt puny compared to his stronger classmates.
C1 noun /prɪˈzʌmp.ʃən/

Presumption

Meaning
an idea that is taken to be true without proof
Example
There is a presumption of innocence in the legal system.
C1 noun /ˈprɛljuːd/

prelude

Meaning
An action, event, or statement that serves as an introduction to something more important.
Example
The small fight was only a prelude to a bigger conflict.