Adjective extra has 3 senses
- extra, other, additional - further or added; "called for additional troops"; "need extra help"; "an extra pair of shoes"; "I have no other shoes"; "there are other possibilities"
Antonym: subtracted (indirect, via added)
- excess, extra, redundant, spare, supererogatory, superfluous, supernumerary, surplus - more than is needed, desired, or required; "trying to lose excess weight"; "found some extra change lying on the dresser"; "yet another book on heraldry might be thought redundant"; "skills made redundant by technological advance"; "sleeping in the spare room"; "supernumerary ornamentation"; "it was supererogatory of her to gloat"; "delete superfluous (or unnecessary) words"; "extra ribs as well as other supernumerary internal parts"; "surplus cheese distributed to the needy"
Antonym: necessary (indirect, via unnecessary)
- extra, special - added to a regular schedule; "a special holiday flight"; "put on special buses for the big game"
Antonym: scheduled (indirect, via unscheduled)
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Adverbial extra has 1 sense
- extra - unusually or exceptionally; "an extra fast car"
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Noun extra has 3 senses
- supernumerary, spear carrier, extra - a minor actor in crowd scenes
--1 is a kind of actor, histrion, player, thespian, role player
- extra - an additional edition of a newspaper (usually to report a crisis)
--2 is a kind of edition
- extra, duplicate - something additional of the same kind; "he always carried extras in case of an emergency"
--3 is a kind of artifact, artefact
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