sit in for
Cover for temporarily
To sit in for someone is to take their place temporarily, especially in a job or role: I'm sitting in for the regular host while she's on vacation.
The phrase implies substitution rather than permanent replacement—you occupy the position until the usual person returns.
Common for broadcast hosts, musicians, and meeting attendees.
- representStand in for
- replacePut something else there
- fill-inTemporary substitute person
- proxyAuthorized substitute
- alternateOccur in succession
substitute · backstop · cover · hold down the fort · surrogate · understudy · deputy · pinch-hit · spell · acting · bench player · warm the bench · second string · on deck · interim · ad hoc · agent · delegate
substitution vs. original presence
sit in fordo it yourself
Complete tasks independently
be present · show up · be there · appear
sit, for, sits, sitting, sitter, sitters, seating, sedentary, session