extra

Synonyms: added additional ancillary another auxiliary beyond button extraneous extraordinary fresh further fuss gingerbread gravy ice in addition inessential in reserve in store lagniappe leftover more needless new one more optional other over and above perk plus redundant reserve spare special superfluous supernumerary supplemental supplementary surplus tip unnecessary unneeded unused

Antonyms: basic elementary essential fundamental integral necessary

Synonyms: considerably especially exceptionally extraordinarily extremely markedly noticeably rarely remarkably uncommon uncommonly unusually

Synonyms: addendum addition adjunct affix appendage appurtenance attachment bonus complement extension supernumerary supplement

Antonyms: basic essential fundamental necessity