tighten the reins

to start to control something or someone more carefully (often + on ) She has tightened the reins on her younger sons in an effort to curb their wild behaviour before it's too late.

Common Names:

Name	Pronounced	Usage
Kirsten	KEER-sten (Danish, Norwegian), KUR-stən (English)	Danish, Norwegian, English
Jehonathan	-	Biblical
Nitin	-	Indian, Hindi, Marathi, Gujarati, Telugu, Kannada
Elaine	i-LAYN (English)	English, Arthurian Romance
Yuuko	yoo:-ko	Japanese
Iggy	-	English