caution about

caution (one) about (someone or something)

To warn one about someone or something. My mom always cautions me about the dangers of texting while driving. You need to caution him about Allie before he falls prey to her usual tricks. Everyone cautioned me about going into business with him, but I didn't listen. If I had, I would have saved myself a lot of money and aggravation.

See also: caution

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

caution someone about someone or something

 and caution someone against someone or something

to warn someone against someone or something. Haven't I cautioned you about that before? Hasn't someone cautioned you about Daniel?

See also: caution

McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.