nonplus
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C2 verb /ˌnɒnˈplʌs/

nonplus

Meaning
To surprise and confuse someone so much that they are unsure how to react.
Example
The unexpected question seemed to nonplus the speaker.
C2 adjective /ˈnjuː.mər.ə.bəl/

Numerable

Meaning
capable of being counted; countable
Example
The stars in the sky are not numerable.
C2 verb /ˈnɪɡəl/

niggle

Meaning
to cause slight but persistent annoyance, discomfort, or worry
Example
A small doubt niggled at her mind.
C2 noun ˈnjʊə.rəʊ ˌfiːd.bæk

neurofeedback

Meaning
A technique that uses real-time displays of brain activity to teach self-regulation of brain function.
Example
Neurofeedback enhances cognitive performance and relaxation.
C2 noun /neɪv/

nave

Meaning
the central part of a church building intended to accommodate the congregation
Example
The choir sang beautifully in the church nave.
C2 noun /ˈnʌnəri/

nunnery

Meaning
A convent or building where nuns live and work.
Example
She decided to join the nunnery to devote her life to spiritual practice.
C2 adjective /ˈnjuːmɪnəs/

numinous

Meaning
having a strong spiritual or mysterious quality
Example
The temple had a numinous atmosphere that inspired awe.
C2 adjective /ˈnɪɡərdli/

niggardly

Meaning
unwilling to spend or give; stingy or miserly
Example
He was too niggardly to leave a decent tip.
C2 adjective /ˈnɒmɪk/

nomic

Meaning
Relating to laws, rules, or systems.
Example
The philosopher discussed the nomic necessity of natural laws.
C2 verb /ˈnɪtˌpɪk/

nitpick

Meaning
To find and criticize small or unimportant faults in someone or something.
Example
She tends to nitpick about every little detail.
C2 noun /nɪˈkrɒlədʒi/

necrology

Meaning
An obituary notice or a list of people who have recently died.
Example
The newspaper published a necrology of notable figures who passed away that year.
C2 adjective /ˈnʌpʃəl/

nuptial

Meaning
Relating to marriage or weddings.
Example
The couple prepared for their nuptial ceremony with great joy.
C2 noun /nuːt/

Newt

Meaning
a small amphibian with a long tail that lives both in water and on land
Example
The newt swam gracefully in the pond.
C2 adjective /njuːˈtoʊniən/

newtonian

Meaning
relating to the laws of motion and gravitation formulated by Sir Isaac Newton
Example
The scientist explained the Newtonian laws of motion.
C2 noun /njʊˈrældʒə/

neuralgia

Meaning
intense, often intermittent pain along a nerve pathway
Example
The patient suffers from neuralgia in her face.
C2 noun /naɪˈdʒel.ə/

Nigella

Meaning
small black seeds with a nutty, slightly bitter flavor, also known as black cumin or black seed
Example
Sprinkle nigella seeds on top of the bread before baking.
C2 noun /ˈneɪˌseɪ.ɪŋ/

naysaying

Meaning
The act of expressing negative or pessimistic views.
Example
His constant naysaying discouraged the team.
C2 noun /ˌnjʊə.rəʊˈdʒɛn.ɪ.sɪs/

neurogenesis

Meaning
The process of forming new nerve cells in the brain.
Example
Scientists are studying neurogenesis to understand brain health.
C2 noun /ˌnɒn ˈsɛkwɪtər/

non sequitur

Meaning
a statement or conclusion that does not logically follow from the previous statement
Example
His comment about the weather was a complete non sequitur during the budget discussion.
C2 adjective /ˈneɪtl/

natal

Meaning
Relating to birth or the place of birth.
Example
She returned to her natal village after many years.
C2 noun /ˈnaɪsəti/

nicety

Meaning
a fine or subtle detail, or a refined, delicate aspect of something
Example
The lawyer explained the legal niceties of the case.
C2 noun /niːp/

neap

Meaning
A tide just after the first or third quarters of the moon when the difference between high and low tide is least.
Example
During a neap tide, the water level change is minimal.
C2 verb /ˌnɒnˈplʌst/

nonplussed

Meaning
Past tense of nonplus; surprised and unsure how to react.
Example
He stood nonplussed at the strange remark.
C2 noun /ˈnɒn.ɪʤ/

Nonage

Meaning
the period of being under the legal age of majority; youth or immaturity
Example
During his nonage, all legal decisions were made by his guardian.
C2 noun /ˈnæfθə/

naphtha

Meaning
A flammable oil containing hydrocarbons, obtained from petroleum or coal tar, used as fuel or solvent.
Example
The factory stored barrels of naphtha for industrial use.
C2 noun /ˌniːoʊˈlætɪn/

neo-latin

Meaning
The use of Latin language for scholarly, scientific, and literary purposes after the medieval period.
Example
Many scientific names are derived from Neo-Latin.
C2 adjective ˌnjʊəroʊˈkɒɡnɪtɪv

neurocognitive

Meaning
Related to brain information processing and memory power
Example
Neurocognitive functions decline due to lack of sleep.
C2 noun /ˌniːoʊˈdɑːrwɪnɪzəm/

neo-darwinism

Meaning
A modern interpretation of Darwin's theory of evolution, integrating genetics and natural selection.
Example
Neo-Darwinism combines Darwin’s theory of natural selection with modern genetics.
C2 noun /næˈteɪʃən/

natation

Meaning
The act or sport of swimming.
Example
She took lessons in natation to improve her swimming skills.
C2 adjective /ˈnjuː.trɪ.tɪv/

nutritive

Meaning
Relating to nutrition; having nourishing qualities.
Example
The nutritive value of the fruit is very high.
C2 verb /ˈnɔːzieɪt/

nauseate

Meaning
To make someone feel sick, with an inclination to vomit.
Example
The spoiled food nauseated him quickly.
C2 noun /ˈnɛkrəˌmænsi/

necromancy

Meaning
the practice of communicating with the dead, often to predict the future
Example
Ancient texts described rituals of necromancy performed by priests.
C2 noun /ˈnoʊzˌɡeɪ/

nosegay

Meaning
a small bunch of flowers, typically given as a gift or carried for decoration
Example
She carried a nosegay of fresh roses to the ceremony.
C2 noun /nɪb/

nib

Meaning
the pointed end of a pen used for writing or drawing
Example
He dipped the nib into the ink before writing.
C2 noun /nəˈkrɒpəlɪs/

necropolis

Meaning
a large ancient cemetery with elaborate tombs
Example
The archaeologists discovered artifacts in the necropolis of the ancient city.
C2 noun /njuːˈmɪzmətɪst/

numismatist

Meaning
A person who studies or collects coins, paper currency, and medals.
Example
The numismatist displayed his rare coin collection at the exhibition.
C2 adjective /ˈnɔɪ.səm/

Noisome

Meaning
having an extremely offensive smell; harmful or unpleasant
Example
The noisome smell from the garbage made everyone cover their noses.
C2 noun /ˈnɑːstrəm/

nostrum

Meaning
a medicine or remedy, especially one that is not considered effective; a questionable solution
Example
The politician’s plan was dismissed as a mere nostrum for a complex problem.
C2 adjective /ˌnɒnˈtrɪviəl/

nontrivial

Meaning
Not simple or easy; requiring effort or significant thought.
Example
Solving the equation turned out to be a nontrivial task.
C2 noun /ˈnoʊmənˌkleɪtʃər/

nomenclature

Meaning
A system of names or terms used in a particular science, art, or field.
Example
The chemical nomenclature can be difficult for beginners to understand.
C2 noun /ˈniːəˌfaɪt/

neophyte

Meaning
A beginner or novice in a subject, skill, or belief.
Example
As a neophyte in programming, she often asked for guidance from her mentor.
C2 noun /niːˈɒkrəsi/

neocracy

Meaning
A government or leadership run by inexperienced or new officials.
Example
The sudden revolution led to a neocracy with inexperienced leaders.
C2 adjective ˌnjʊə.rəʊ.saɪənˈtɪ.fɪk

neuroscientific

Meaning
Related to the scientific study of the brain and nervous system.
Example
Neuroscientific research helps understand memory retention.
C2 adjective /ˌnɒnpəˈreɪl/

nonpareil

Meaning
Having no equal; unrivaled or matchless.
Example
Her beauty was considered nonpareil in the region.
C2 noun /niˈɒlədʒi/

neology

Meaning
The use of new words or the study of their origin.
Example
The professor specialized in neology, studying the creation of modern slang.
C2 noun /ˈnjuː.trɪ.mənt/

nutriment

Meaning
Something that nourishes; sustenance or food.
Example
The soil provides nutriment to the plants.
C2 noun /ˈnɪn.i/

Ninny

Meaning
a silly or foolish person; someone who lacks common sense
Example
Don't be such a ninny, use your brain!
C2 verb /ˈnuːkliˌeɪt/

nucleate

Meaning
to form into a nucleus or bring together into a central part
Example
The droplets began to nucleate around tiny particles in the air.
C2 noun /niːˈɒlədʒɪzəm/

neologism

Meaning
A newly coined word or expression.
Example
The internet has given rise to many neologisms like 'selfie' and 'hashtag'.
C2 noun /ˈnaɪɪˌlɪzəm/

nihilism

Meaning
The rejection of all religious and moral principles, often in the belief that life is meaningless.
Example
The philosopher was criticized for promoting nihilism.
C2 noun /nɑːrˈsɪsəs/

narcissus

Meaning
A type of flowering plant with yellow or white blooms, often associated with self-love from Greek mythology.
Example
A narcissus bloomed in the garden during spring.
C2 noun /ˈnɛtl̩/

nettle

Meaning
a plant with stinging hairs that cause irritation when touched
Example
He accidentally brushed against the nettle and felt a sharp sting.
C2 noun /ˈnaɪəlɪst/

nihilist

Meaning
A person who rejects all religious and moral principles, often believing that life is meaningless.
Example
He was called a nihilist for rejecting all social norms.
C2 adjective /ˈnjuːbaɪl/

nubile

Meaning
of a young woman, sexually mature and suitable for marriage
Example
The village was celebrating the festival with its nubile maidens dancing.
C2 noun /ˈnɛkrəˌmænsər/

necromancer

Meaning
a person who practices necromancy; a wizard or magician who claims to communicate with the dead
Example
The villagers feared the old necromancer who lived at the edge of the forest.
C2 adjective /ˈnjuː.ɡə.tɔːr.i/

nugatory

Meaning
Of little or no value; worthless or insignificant.
Example
His efforts were nugatory and did not change the outcome.
C2 noun /ˌɛn.biː.esˈpiː/

nbsp

Meaning
a non-breaking space character in HTML used to prevent an automatic line break at its position
Example
Use   in HTML to add a space that won't break into a new line.
C2 noun /ˌnɛɡlɪˈʒeɪ/

negligee

Meaning
A woman's light dressing gown, often made of thin or silky material.
Example
She wore a silk negligee before going to bed.
C2 noun /nɪt/

nit

Meaning
The egg or young form of a louse or other parasitic insect.
Example
The teacher noticed nits in the child’s hair.
C2 noun /naɪt kwiːn/

Night queen

Meaning
a fragrant white flower that blooms at night and releases strong sweet scent
Example
The night queen flowers filled the garden with their sweet fragrance.
C2 noun /nɛˈkroʊsɪs/

necrosis

Meaning
the death of body tissue due to disease, injury, or lack of blood supply
Example
The doctor explained that the patient’s wound showed signs of necrosis.
C2 noun /naɪt ˈdʒæz.mɪn/

Night-jesmine

Meaning
a fragrant flowering tree that blooms at night with small white flowers
Example
The night-jasmine tree blooms only after sunset with its tiny white flowers.
C2 noun, adjective /nɒn ˈkɒmbətənt/

non-combatant

Meaning
a person not engaged in fighting during a war, such as civilians or medical staff
Example
The Red Cross workers were treated as non-combatants in the conflict.
C2 noun /ˌniːoʊˈpeɪɡənɪzəm/

neopaganism

Meaning
Modern religious movements influenced by or claiming to be derived from the various historical pagan beliefs of pre-modern Europe.
Example
Neopaganism has gained popularity as people seek spiritual alternatives to mainstream religions.
C2 adjective ˌnjʊə.rəʊ.prəˈtek.tɪv

neuroprotective

Meaning
Having the ability to protect nerve cells from damage, degeneration, or impaired function.
Example
Omega-3 fatty acids have neuroprotective benefits.
C2 adjective /nɪˈfɛəriəs/

nefarious

Meaning
Wicked, criminal, or morally bad.
Example
The police uncovered a nefarious plot to cheat investors.
C2 noun /ˌnjuːməˈreɪʃən/

numeration

Meaning
the action or process of counting or assigning numbers
Example
The teacher explained the basics of numeration to the students.
C2 adjective /ˈnɛtlˌsʌm/

nettlesome

Meaning
Causing irritation, annoyance, or difficulty.
Example
The nettlesome rules frustrated the workers.
C2 adjective /ˈnɛðər/

nether

Meaning
situated down or below; lower
Example
They explored the nether regions of the cave.
C2 noun /ˈnes.lɪŋ/

Nestling

Meaning
a young bird that has not yet left its nest
Example
The mother bird fed the hungry nestling with worms.
C2 adjective /ˈnæti/

natty

Meaning
Neat, stylish, and fashionable in appearance.
Example
He looked very natty in his new suit.
C2 noun /nɑnˈen.tə.ti/

Nonentity

Meaning
a person of no importance or influence; something that does not exist
Example
He felt like a nonentity in the large corporation.
C2 adjective /ˌnjuːmɪzˈmætɪk/

numismatic

Meaning
relating to the study or collection of coins, currency, and medals
Example
He has a numismatic collection of rare coins from around the world.
C2 noun /nɪmf/

Nymph

Meaning
a mythological spirit of nature; a beautiful young woman in classical mythology
Example
The water nymph appeared by the moonlit lake.
C2 noun /ˈneɪdɪər/

nadir

Meaning
The lowest point of a situation or condition.
Example
The company reached its nadir during the financial crisis.
C2 adjective /ˌnɒndɪˈskrɪpt/

nondescript

Meaning
Lacking distinctive or interesting features; dull and unremarkable.
Example
He lives in a nondescript apartment building on the edge of town.
C2 adjective /ˌnɒnkəˈmɪtl̩/

noncommittal

Meaning
Not expressing or showing a clear opinion, decision, or commitment.
Example
She gave a noncommittal reply when asked about her future plans.
C2 verb /ˌnɒnˈplʌst/

nonplused

Meaning
Past tense of nonplus; surprised and confused.
Example
She was completely nonplused by his sudden decision.
C2 adjective /ˈneb.jə.ləs/

Nebulous

Meaning
vague or unclear; lacking definite form; hazy
Example
His plans for the future remain nebulous and unclear.
C2 noun /ˌnɒvəˈlɛt/

novellette

Meaning
A short novel or long short story.
Example
The author published a novellette as a preview of her upcoming series.