- a person or thing acting or serving in place of another.
- (formerly) a person who, for payment, served in an army or navy in the place of a conscript.
- a word that functions as a replacement for any member of a class of words or constructions, as do in He doesn't know but I do.
- to put (a person or thing) in the place of another.
- to take the place of; replace.
- to replace (one or more elements or groups in a compound) by other elements or groups.
- to act as a substitute.
- of or relating to a substitute or substitutes.
- composed of substitutes.
- to serve or cause to serve in place of another person or thing
- to replace (an atom or group in a molecule) with (another atom or group)
- to replace (one expression) by (another) in the context of a third, as replacing x + y for x in 3 x = k gives 3 x + 3 y = k
- a person or thing that serves in place of another, such as a player in a game who takes the place of an injured colleague
- (as modifier)
- grammar another name for pro-form
- Canadian another name for supply teacher
- nautical another word for repeater (def. 5)
- (formerly) a person paid to replace another due for military service
