五十代(ごじゅうだい)

ごじゅうだい
noun
one's fifties; the fifties (age range 50-59)
time-periodperson
1. one's fifties; the fifties (age range 50-59)
The decade of life from age 50 to 59, or a person who is in that age range.
父(ちち)は五十代(ごじゅうだい)になった。
My father entered his fifties.
五十代(ごじゅうだい)の男性(だんせい)が健康(けんこう)診断(しんだん)を受(う)けた。
A man in his fifties had a health checkup.
五十代(ごじゅうだい)後半(こうはん)から体力(たいりょく)の衰(おとろ)えを感(かん)じるようになったが、運動(うんどう)を続(つづ)けている。
I started feeling a decline in stamina in my late fifties, but I keep exercising.

Composed of 五十(ごじゅう) (fifty) + 代(だい) (generation; age range). The suffix 代(だい) attached to a round number creates an age decade. This pattern is productive: 二十代(にじゅうだい) (twenties), 三十代(さんじゅうだい) (thirties), etc.

Common collocations

Common patterns

The 代(だい) suffix works with all decade numbers:

general
Added 2026.4.28 21:28 · Revised 2026.9.2 13:02
25500/25926_gojuudai