I. adjective
Synonyms: superfluous , de trop, excess, recrementitious, spare, superfluent, supernumerary, surplus
Related Word: added, additional, supplemental, supplementary
II. adverb
to a degree or extent beyond the usual
she was extra smart
Synonyms: extremely, rarely, ||uncommon, uncommonly, unusually
Related Word: especially; particularly; considerably, markedly, noticeably
Contrasted words: barely, scarcely