fills in

Takes over temporarily

Fills in means to supply what's missing in a space or gap.

You fill in a form by completing its blank fields.

You fill in for someone by taking their place temporarily: Can you fill in for me while I'm on vacation?

To fill someone in is to give them information they lack: Fill me in on what I missed.

Related

occupies · stand-in · pinch-hit · supplements · manages · understudy · substitute · takes over · takes the reins · steps in · replace · proxy · backup plan · temp worker · plug · provides · undertakes · alternate

Opposites
substitution/replacement

fills invacates

Leaves premises empty

relinquishes · steps aside · abdicates · abandons

information completion

fills inomits

Leaves something out

erases · deletes · crosses out · blanks out · redacts

physical filling

fills indigs out

Extracts from below

hollows out · excavates · empties · drains · clears out

Family

fill, filling, filled, refill, fill in, filler, fills, refilled, overfill

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G