The Oxford Thesaurus An A-Z Dictionary of Synonyms - extra adj.

1) additional, added, auxiliary, accessory, supplementary, supplemental, further, ancillary, subsidiary, collateral, adventitious: We had an extra person for dinner. Zenobia has an extra toe on each foot. 2) leftover, excess, spare, surplus, unused, superfluous, supernumerary, reserve: After all were served, we had two extra desserts. --n. 3) addition, addendum, accessory, appurtenance, supplement, bonus, premium, dividend: As an extra, each customer receives a free ball-point pen. 4) supplement, US mark-up, surcharge, Slang US and Canadian kicker: There is an extra if you want bread and butter. 5) supernumerary, walk-on, Colloq super, spear-carrier: One could scarcely call being an extra a 'Hollywood career'. --adv. 6) uncommonly, unusually, exceptionally, unexpectedly, extraordinarily, remarkably, notably, surprisingly, amazingly, very, particularly, especially, extremely, strikingly: Teacher said that Philip was extra good today. 7) additionally, again, more, in addition: They charge extra for room service.