fifty

noun

fif·​ty ˈfif-tē 

plural fifties

1

: a number equal to five times 10 see Table of Numbers

2

fifties plural : the numbers 50 to 59

specifically : the years 50 to 59 in a lifetime or century

3

: a 50-dollar bill

fiftieth

ˈfif-tē-əth 

adjective or noun

fifty adjective

fifty pronoun, plural in construction

fiftyish

ˈfif-tē-ish 

adjective

Examples of fifty in a Sentence

She is in her fifties.

The bill for dinner came to $43, and she gave him a fifty.

Recent Examples on the Web

Yet as the four members of Creed sit together in midtown Manhattan on a Tuesday afternoon in June 2024, the mood is light, and the guys — all of whom have entered their fifties over the past year-plus — are clearly enjoying a sea change in how their catalog is being treated. —Jason Lipshutz, Billboard, 18 July 2024

We were very inspired by the eyewear that our grandparents wore in the forties and fifties. —Alena Botros, Fortune, 27 June 2024

According to data from The Department of Health and Human Resources, fibroids are most common in women in their forties and early fifties. —Sandra Rose Salathe, Flow Space, 27 June 2024

The manager was a man in his early fifties, per KTLA. —Samira Asma-Sadeque, Peoplemag, 14 June 2024

Word History

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

First Known Use

before the 12th century, in the meaning defined at sense 1

Phrases Containing fifty

• fifty-fifty

Kids Definition

fifty

noun

fif·​ty ˈfif-tē 

plural fifties

: a number equal to five times 10 see number

fiftieth

-tē-əth 

adjective or noun

fifty adjective or pronoun