Main Entry: fif·ty

Pronunciation: \ˈfif-tē\

Function: noun

Inflected Form(s): plural fifties

Etymology: Middle English, from fifty, adjective, from Old English fīftig, from fīftig, noun, group of 50, from fīf five + -tig group of ten; akin to tīen ten

Date: before 12th century

1 — see number table
2 plural : the numbers 50 to 59; specifically : the years 50 to 59 in a lifetime or century
3 : a 50-dollar bill

— fif·ti·eth \-tē-əth\ adjective or noun

— fifty adjective

— fifty pronoun, plural in construction

— fif·ty·ish \-tē-ish\ adjective