beware

Reading level: hard

Estimated CEFR level: B2 — Upper-Intermediate

Estimated from word frequency; not an official CEFR classification.

Definition

  1. verb be on one's guard; be cautious or wary about; be alert to

Etymology

From Middle English bewar, be war, be ware, forms of Middle English ben ware (“to be on one's guard, be vigilant”, literally “be ware”), equivalent to be + ware or be + aware. Compare Old English bewarian.

In classic literature

Synonyms

mind

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