beware Meaning, Definition & Usage

verb be on one's guard; be cautious or wary about; be alert to
mind.
- Beware of telephone salesmen

Be, imperative of verb to be + ware. See Ware, Wary.

To be on one's guard; to be cautious; to take care; -- commonly followed by of or lest before the thing that is to be avoided.
Beware of all, but most beware of man ! Pope.

Beware the awful avalanche. Longfellow.
To have a special regard; to heed. Obs.
Behold, I send an Angel before thee. . . . Beware of him, and obey his voice. Ex. xxiii. 20, 21.
✍ This word is a compound from be and the Old English ware, now wary, which is an adjective. "Be ye war of false prophetis." Wyclif, Matt. vii. 15. It is used commonly in the imperative and infinitive modes, and with such auxiliaries (shall, should, must, etc.) as go with the infinitive.

To avoid; to take care of; to have a care for. Obs. "Priest, beware your beard." Shak.
To wish them beware the son. Milton.