C2 English Vocabulary List (CEFR)

This is the C2 vocabulary list from Wordineer’s CEFR ESL dataset (50 words at this level). Each word has part of speech, American English IPA, a plain-language definition, and an example sentence — see the source and methodology.

debacle

C2

noun · /dəˈbɑkəl/

A complete and shameful failure

“The launch turned into a public debacle.”

esoteric

C2

adjective · /ˌɛsəˈtɛrɪk/

Known or understood by only a few

“His research covers esoteric parts of physics.”

egregious

C2

adjective · /ɪˈɡridʒəs/

Very bad and easily noticed

“The report contained egregious errors.”

ephemeral

C2

adjective · /ɪˈfɛmərəl/

Lasting for a very short time

“Fame can be ephemeral — enjoyed briefly and quickly forgotten.”

echelon

C2

noun · /ˈɛʃəˌlɑn/

A level or rank within an organization

“He reached the top echelon of the firm.”

nadir

C2

noun · /ˈneɪdər/

The lowest point of something

“That loss was the nadir of his career.”

zephyr

C2

noun · /ˈzɛfər/

A soft, gentle breeze

“A cool zephyr moved through the trees.”

cognizant

C2

adjective · /ˈkɑɡnəzənt/

Aware of or knowing about something

“She is cognizant of the risks involved.”

panacea

C2

noun · /ˌpænəˈsiə/

A solution said to fix all problems

“Technology is not a panacea for schools.”

erudite

C2

adjective · /ˈɛrəˌdaɪt/

Showing great knowledge from long study

“The erudite professor spoke five languages.”

sanguine

C2

adjective · /ˈsæŋɡwɪn/

Hopeful and positive about the future

“She remains sanguine about the election.”

maelstrom

C2

noun · /ˈmeɪlstrəm/

A situation of great confusion or trouble

“The country fell into a maelstrom of protest.”

apocryphal

C2

adjective · /əˈpɑkrəfəl/

Widely told but probably not true

“That story about the president is apocryphal.”

fastidious

C2

adjective · /fæˈstɪdiəs/

Very concerned about small details

“He is fastidious about his shoes staying clean.”

bombastic

C2

adjective · /bɑmˈbæstɪk/

Using long words to sound important

“His bombastic speech bored the crowd.”

cacophony

C2

noun · /kæˈkɑfəni/

A loud and unpleasant mix of sounds

“A cacophony of horns filled the street.”

inscrutable

C2

adjective · /ɪnˈskrutəbəl/

Impossible to understand or read

“His inscrutable face gave nothing away.”

recalcitrant

C2

adjective · /rɪˈkælsɪtrənt/

Refusing to obey or cooperate

“The recalcitrant student ignored the teacher.”

effervescent

C2

adjective · /ˌɛfərˈvɛsənt/

Full of energy and excitement

“Her effervescent laugh fills every room.”

perfunctory

C2

adjective · /pərˈfʌŋktəri/

Done quickly with little care

“He gave a perfunctory nod and left.”

denouement

C2

noun · /ˌdeɪˌnuˈmɑn/

The final part of a story where things are resolved

“The novel's denouement surprised every reader.”

ineffable

C2

adjective · /ɪˈnɛfəbəl/

Too great to describe in words

“She felt an ineffable joy at her wedding.”

hackneyed

C2

adjective · /ˈhæknid/

Used so often it has lost meaning

“The film relies on hackneyed jokes.”

quixotic

C2

adjective · /kwɪkˈsɑtɪk/

Full of hope but unlikely to succeed

“Her quixotic plan to end hunger inspired many.”

obfuscate

C2

verb · /ˈɑbfəˌskeɪt/

To make something hard to understand

“The report obfuscates the real numbers.”

surreptitious

C2

adjective · /ˌsɜrəpˈtɪʃəs/

Done in secret to avoid notice

“He took a surreptitious photo of the painting.”

chicanery

C2

noun · /ʃɪˈkeɪnəri/

The use of tricks to deceive

“The lawyer accused him of financial chicanery.”

propitious

C2

adjective · /prəˈpɪʃəs/

Giving a good chance of success; favorable

“The clear skies were propitious for the outdoor ceremony.”

sycophant

C2

noun

A person who flatters others excessively to gain advantage

“Surrounded by sycophants, the leader never heard honest advice.”

iconoclast

C2

noun · /ˌaɪˈkɑnəˌklæst/

A person who attacks common beliefs

“The artist was an iconoclast of his time.”

obsequious

C2

adjective · /əbˈsikwiəs/

Trying too hard to please someone in power

“The obsequious waiter praised every dish.”

salubrious

C2

adjective

Good for your health

“The town has a salubrious mountain climate.”

garrulous

C2

adjective · /ˈɡɛrələs/

Talking a lot, often about small things

“My garrulous uncle told the same story twice.”

solipsism

C2

noun

The philosophical idea that only one's own mind is certain to exist

“His solipsism made it difficult for him to empathize with others.”

desultory

C2

adjective · /ˈdɛsəlˌtɔri/

Done without plan or purpose

“He made a desultory attempt at cleaning.”

soporific

C2

adjective

Making you feel sleepy

“The long lecture had a soporific effect.”

antediluvian

C2

adjective

Extremely old or old-fashioned

“His antediluvian phone still has a cord.”

mellifluous

C2

adjective

Sweet and smooth to hear

“She has a mellifluous singing voice.”

limpid

C2

adjective

Clear and easy to see through

“The limpid lake reflected the sky.”

truculent

C2

adjective · /ˈtrʌkjələnt/

Quick to argue or become violent

“The truculent fan shouted at the referee.”

diaphanous

C2

adjective · /daɪˈæfənɪs/

Light and almost see-through

“She wore a diaphanous silk scarf.”

pusillanimous

C2

adjective · /pjusəˈlænəməs/

Showing a lack of courage

“His pusillanimous silence angered the crowd.”

copacetic

C2

adjective

In good order or completely fine

“After the talk, everything felt copacetic.”

equivocate

C2

verb · /ɪˈkwɪvəˌkeɪt/

To use ambiguous language to avoid commitment or to mislead

“The politician equivocated rather than giving a direct answer.”

lachrymose

C2

adjective

Likely to cry or make people cry

“The lachrymose ending made me weep.”

perspicacious

C2

adjective · /pərspəˈkeɪʃəs/

Having a ready insight; showing great mental penetration or discernment

“A perspicacious observer noticed the flaw in the argument immediately.”

grandiloquent

C2

adjective · /ɡrænˈdɪləkwənt/

Using fancy language to sound impressive

“The mayor gave a grandiloquent farewell speech.”

pellucid

C2

adjective

Very clear and easy to follow

“The teacher gave a pellucid explanation.”

vicissitude

C2

noun · /ˌvɪˈsɪsɪtud/

A change in circumstances, often unwelcome

“He faced the vicissitudes of army life.”

defenestrate

C2

verb

To throw someone out of a window

“The angry king had his rival defenestrated.”

Downloads

CSV (imports into Anki, Quizlet)

All C2 words (50)

A

WordPart of speech
antediluvianadjective
apocryphaladjective

B

WordPart of speech
bombasticadjective

C

WordPart of speech
cacophonynoun
chicanerynoun
cognizantadjective
copaceticadjective

D

WordPart of speech
debaclenoun
defenestrateverb
denouementnoun
desultoryadjective
diaphanousadjective

E

WordPart of speech
echelonnoun
effervescentadjective
egregiousadjective
ephemeraladjective
equivocateverb
eruditeadjective
esotericadjective

F

WordPart of speech
fastidiousadjective

G

WordPart of speech
garrulousadjective
grandiloquentadjective

H

WordPart of speech
hackneyedadjective

I

WordPart of speech
iconoclastnoun
ineffableadjective
inscrutableadjective

L

WordPart of speech
lachrymoseadjective
limpidadjective

M

WordPart of speech
maelstromnoun
mellifluousadjective

N

WordPart of speech
nadirnoun

O

WordPart of speech
obfuscateverb
obsequiousadjective

P

WordPart of speech
panaceanoun
pellucidadjective
perfunctoryadjective
perspicaciousadjective
propitiousadjective
pusillanimousadjective

Q

WordPart of speech
quixoticadjective

R

WordPart of speech
recalcitrantadjective

S

WordPart of speech
salubriousadjective
sanguineadjective
solipsismnoun
soporificadjective
surreptitiousadjective
sycophantnoun

T

WordPart of speech
truculentadjective

V

WordPart of speech
vicissitudenoun

Z

WordPart of speech
zephyrnoun

Frequently asked

How many words are on the C2 list?

50 at this level. 50 have a written definition and example sentence.

Can I import the CSV into Anki or Quizlet?

Yes. Both accept comma-separated files with a header row. Columns are word, pos, level, ipa, definition, example.

Where do the pronunciations come from?

American English IPA, transcribed from the CMU Pronouncing Dictionary. Stress marks: ˈ primary, ˌ secondary.

Built and maintained by Garrick Dee. Last verified: 2026-09-30 · Dataset v2.0.0 · Sources: Oxford 3000 (A1-B1), Oxford 5000 (B2-C1), English Vocabulary Profile (C2), CMU Pronouncing Dictionary (via NLTK), wordfreq (Zipf, en).

Cite: Wordineer CEFR ESL Vocabulary (v2.0.0), Garrick Dee, 2026. License: CC BY 4.0.