n.
Pronunciation: ' fif-t ē
Function: noun
Inflected Form: plural fifties
Etymology: Middle English, from fifty, adjective, from Old English f ī ftig, from f ī ftig, noun, group of 50, from f ī f five + -tig group of ten; akin to t ī en 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 \ -t ē - ə th \ adjective or noun
– fifty adjective
– fifty pronoun, plural in construction
– fif · ty · ish \ -t ē -ish \ adjective