caution about

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?

Name	Pronounced	Usage
Gro	-	Norwegian
Beaumont	BO-mahnt	English (Rare)
Jovana	-	Serbian, Macedonian
Najib	-	Arabic
Golnar	-	Persian
Isolda	i-ZOL-də (English), i-SOL-də (English)	Arthurian Romance