under someone’s thumb

under (one's) thumb

Under another's authoritarian control; continually forced to submit to another's will. They seem happy when they're out and about, but I hear that Johnny is under his husband's thumb at home. Although the job paid well, I couldn't stand the way I was under the boss's thumb.
See also: thumb

under someone’s thumb

mod. under someone’s control. You can’t keep your kids under your thumb all their lives.
See also: thumb