C1 English Vocabulary List, Advanced CEFR Words

C1 is advanced. Follow fast native speech, read academic texts, express yourself with real nuance.

Roughly 3–5 years of serious study.

About C1

C1 is advanced. Vocabulary doubles again to around 8,000 words, and the gains shift from quantity to quality: nuance, register, collocation. You learn that strong tea is not powerful tea, that "I beg to differ" means something different from "I disagree", and that dilapidated, run-down, and decrepit are not interchangeable. Idiomatic expressions and phrasal verb networks become a major focus.

Who this list is for

If you can read literature, follow fast native speech in any accent, and write a coherent argumentative essay, you are around C1. Most learners reach C1 after 3–5 years of serious study, usually combined with immersion. C1 is the level competitive university programs and white-collar employers ask for, and it is where IELTS Band 7 sits.

How to study

At C1 vocabulary acquisition becomes incidental: you pick up words from extensive reading, conversation, and noticing collocations. Use the list to spot blind spots and feed them to spaced repetition with full example sentences (not single-word cards). Focus on collocations rather than isolated words: heavy rain, make a decision, take responsibility. The shape of the language matters more than its individual pieces.

The list (2167 words)

Some example sentences come from the Tatoeba Project (tatoeba.org), CC BY 2.0 FR. The rest were written for MindDory. Tatoeba, CC BY 2.0 FR.

Where do the words after this list come from?

A list has an end. The words you keep for good usually turn up somewhere else — in a page you read, a show you watched, or a conversation you had — one at a time, and rarely at the level you planned for.

MindDory connects to Claude, Cursor, and other assistants that speak the Model Context Protocol, so a word you meet while you are chatting is saved to your deck as a flashcard without you leaving the conversation. There is no copy and paste, no CSV export, and no browser extension.

How the assistant connection works

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