forewarn about

forewarn someone about something

and forewarn someone of something

to warn someone about someone or something. They forewarned us of your strange behavior. Didn't we forewarn you about Max's problem?

Name	Pronounced	Usage
Hinson	[hinsn]
Sloan	[sləun]
Erland	ER-lahnd (Swedish)	Swedish, Danish
Faigel	-	Yiddish
Dushyant	-	Indian, Hindi
Zhihao	-	Chinese