beware

Definition

To use caution, pay attention to (used both with and without of).

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.

Example Sentences

• "Behold, I send an Angel before thee[…]. Beware of him, and obey his voice."
• "Beware the Ides of March."