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CEFR word level
What CEFR level is “thesis”?
Estimated level
C1
advanced
“thesis” is roughly the #5928 most common English word, which puts it at an estimated C1 level.
Meaning
noun. Senses relating to logic, rhetoric, etc.
How the level is decided
The level is an estimate based on word frequency: the more common a word is in everyday English, the lower its CEFR level. “thesis” sits in the C1 band. It is a quick guide for choosing what to study, not an official CEFR rating. Check any other word or a whole list with the word level checker.
Other C1 words to learn
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