under sb's thumb
to be under someone's control:
He's got the committee firmly under his thumb - they agree to whatever he asks.

[TahlilGaran] Advanced Learner's Dictionary ▲

under something's thumb
under (someone's/something's) thumb
completely controlled by someone or something.
That girl is totally under her mother's thumb.

[TahlilGaran] English Idioms Dictionary ▲

under thumb
under (someone's/something's) thumb
completely controlled by someone or something.
That girl is totally under her mother's thumb.

[TahlilGaran] English Idioms Dictionary ▲

under one's thumb
obedient to someone, controlled by someone
He is only an assistant salesman but he has his boss under his thumb.

The woman has her husband under her thumb and she never gives him any freedom at all.

[TahlilGaran] English Idioms Dictionary ▲

under one's thumb
adj. or adv. phr. Obedient to you; controlled by you; under your power.
The Jones family is under the thumb of the mother.
Jack is a bully. He keeps all the younger children under his thumb.
The mayor is so popular that he has the whole town under his thumb.
Compare: JUMP THROUGH THE HOOP.

[TahlilGaran] English Idioms Dictionary ▲

under someone's thumb
under (someone's/something's) thumb
completely controlled by someone or something.
That girl is totally under her mother's thumb.

[TahlilGaran] English Idioms Dictionary ▲