三十代(さんじゅうだい)

さんじゅうだい
noun
one's thirties
person
1. one's thirties
The age range from 30 to 39 years old. Used to describe a person's approximate age.
彼(かれ)は三十代(さんじゅうだい)前半(ぜんはん)だ。
He is in his early thirties.
三十代(さんじゅうだい)のうちに転職(てんしょく)したい。
I want to change jobs while I'm still in my thirties.
三十代(さんじゅうだい)の女性(じょせい)をターゲットにした雑誌(ざっし)が人気(にんき)を集(あつ)めている。
Magazines targeting women in their thirties are gaining popularity.

Forms

三十(さんじゅう) (thirty) + 代(だい) (generation, era). Follows the standard pattern for age decades: 二十代(にじゅうだい), 三十代(さんじゅうだい), 四十代(よんじゅうだい), etc.

Subdivisions

Common collocations

  • 三十代(さんじゅうだい)の男性(だんせい)/女性(じょせい): man/woman in their thirties
  • 三十代(さんじゅうだい)向(む)け: aimed at people in their thirties
  • 三十代(さんじゅうだい)のうちに: while still in one's thirties

Usage

Commonly used in marketing, demographics, and casual conversation about age. Japanese culture often discusses age ranges by decade, so this pattern appears frequently.

general
Added 2026.3.14 10:36 · Revised 2026.9.2 13:01
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