fif·ty /ˈfɪfti/ noun, pl-ties 1[count] : the number 50 2fifties[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.
- fif·ti·eth /ˈfɪftiəɵ/ adj • their fiftieth wedding anniversary
- fiftiethnoun, pl-eths[count] • one fiftieth of the total
- fiftyadj • fifty cars in the parking lot
- fiftypronoun • Fifty (of them) were wounded in battle.
- fif·ty·ish /ˈfɪftijɪʃ/ adj • He looked fiftyish. [=about 50 years old]
