put one on guard

put one on one's guard

to make one wary or cautious. The menacing growl by the watchdog put me on my guard. Every time the boss comes around, it puts me on my guard.

Name	Pronounced	Usage
Pauleen	paw-LEEN	English (Rare)
Robertas	-	Lithuanian
Folami	-	Western African, Yoruba
Silas	SIE-ləs (English)	English, Greek, Biblical, Biblical Latin, Biblical Greek
Fatmire	-	Albanian
Konstanty	kawn-STAHN-ti	Polish