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
Ahinoam	-	Biblical
BjÖRn	BYUURN (Swedish, German), PYUURN (Icelandic)	Swedish, Icelandic, German, Ancient Scandinavian
Elmira	el-MIR-ə	Literature
LinnÉA	lin-NE-ah	Swedish
Markuss	-	Latvian
MagdalÉNa	-	Czech, Slovak, Hungarian