caution (one) about (someone or something)

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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.
See also: caution
Farlex Dictionary of Idioms. © 2015 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.
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References in periodicals archive ?
Researchers (Myers & Alpert 1968; Wilkie & Pessemier 1973) caution us about the use of measured importance ratings in reflecting salient attributes.
There is no mission statement and no crisp, "Welcome to the White House, this is how to make it work for you." This bodes especially ill for the Clinton White House transition team: After all, four years ago, we were involved in a friendly takeover; that is, the administration before us had every reason to caution us about the mistakes they had made.