
Under somebody’s thumb
Power Imbalance
Indicates a significant power imbalance, where one person is much more powerful than the other.

Ever since the merger, the staff has been under the new manager's thumb.
Negative Connotation
This phrase typically carries a negative connotation, highlighting a lack of freedom or autonomy.

I don't like how she's under her friend's thumb—she can't make her own decisions.
Not Literal
It's a metaphorical phrase and doesn't involve physical control—it's about influence or psychological power.

He's under his coach's thumb, following every bit of advice without question.
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