fif·ty 
/ˈfɪfti/ noun
plural fif·ties /ˈfɪfti/ noun 1 [count] : the number 50 2 fifties [plural] a : the numbers ranging from 50 to 59
b : a set of years ending in digits ranging from 50 to 59
▪ She is in her fifties. ▪ He fondly remembers growing up in the fifties. [=1950–1959] 3 [count] US : a fifty-dollar bill
▪ The bill for dinner came to $43, and she gave him a fifty.
b : a set of years ending in digits ranging from 50 to 59
▪ She is in her fifties. ▪ He fondly remembers growing up in the fifties. [=1950–1959]
▪ The bill for dinner came to $43, and she gave him a fifty.
— fif·ti·eth /ˈfɪftiəθ/ adjective
▪ their fiftieth wedding anniversary
/ˈfɪftiəθ/ adjective ▪ their fiftieth wedding anniversary
— fiftieth noun, plural fiftieths [count]
▪ one fiftieth of the total
▪ one fiftieth of the total
— fifty adjective
▪ fifty cars in the parking lot
▪ fifty cars in the parking lot
— fifty pronoun
▪ Fifty (of them) were wounded in battle.
▪ Fifty (of them) were wounded in battle.
— fif·ty·ish /ˈfɪftijɪʃ/ adjective
▪ He looked fiftyish. [=about 50 years old]
/ˈfɪftijɪʃ/ adjective ▪ He looked fiftyish. [=about 50 years old]
