keep in check

keep (someone or something) in check

To limit or restrain someone or something. We need to come up with provisions to keep the new director in check—otherwise, he'll totally dismantle our department.
See also: check, keep

keep someone or something in check

 and hold someone or something in check
to keep someone or something under control; to restrain someone or something. Hang on to this rope to keep the dog in check. I was so angry I could hardly hold myself in check.
See also: check, keep

keep/hold somebody/something in ˈcheck

control somebody/something: The disease is kept in check with drugs.It was difficult to hold their enthusiasm in check.