beware of (someone or something)

beware of (someone or something)

Be cautious or mindful of something or someone, especially something or someone that might pose a danger of some kind. Beware of the boss today—he's been yelling at everyone he sees. Beware of their dog, he's vicious!See also: beware, of

beware of someone or something

to be cautious and watchful about someone or something. Beware of Ted. He's acting irrational. You should beware of the dog.See also: beware, of