on the watch

on the watch (for someone or something)

alert and watching for someone or something. Please stay on the watch for trouble. I'm always on the watch for Ann. I want to know when she's around.

Name	Pronounced	Usage
Kaden	KAY-dən	English (Modern)
Mustapha	-	Arabic
Thorsten	TAWR-sten (German)	Swedish, Danish, German
Arsenius	-	Ancient Greek (Latinized)
Roderick	['rɔdərik]
Nickolaus	NI-ko-lows	German