extra

further or added

• “called for additional troops”
• “need extra help”
• “an extra pair of shoes”
• “I have no other shoes”
• “there are other possibilities”

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”

added to a regular schedule

• “a special holiday flight”
• “put on special buses for the big game”

a minor actor in crowd scenes

an additional edition of a newspaper (usually to report a crisis)

something additional of the same kind

• “he always carried extras in case of an emergency”

unusually or exceptionally

• “an extra fast car”