To check, stop, or hold back (an action, feeling, movement); to prevent something from proceeding.
彼女が外出しようとしたので、父が必死に押しとどめた。
When she was about to go out, her father desperately held her back.
怒りを押しとどめて冷静に話し合ったほうがいい。
It's better to restrain your anger and discuss things calmly.
部長は衝動的な決定を押しとどめ、追加調査を命じた。
The manager stopped an impulsive decision and ordered further investigation.