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CEFR word level
What CEFR level is “ruby”?
Estimated level
C1
advanced
“ruby” is roughly the #5754 most common English word, which puts it at an estimated C1 level.
Meaning
noun. A clear, deep, red variety of corundum, valued as a precious stone.
Similar words: agate.
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. “ruby” 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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