sits in for
Covers for temporarily
Sits in for means to substitute temporarily for someone, taking their place while they're absent.
A musician sits in for the regular drummer during rehearsal.
A colleague sits in for you at a meeting when you're traveling.
The phrase implies filling a role rather than permanently replacing someone.
- stand-inTemporary human placeholder
- fill inTemporarily replace someone
- pinch-hitterSubstitute batter
- interimProvisional in-between phase
- replacementWhat takes another's place
acting · fill-in · substitute · take over · understudy · bench player · second string · temp worker · surrogate · alternate · ad hoc · proxy · deputy · transitional · spell · delegate · caretaker · appoint