1.
one's thirties
The age range from 30 to 39 years old. Used to describe a person's approximate age.
彼は三十代前半だ。
He is in his early thirties.
三十代のうちに転職したい。
I want to change jobs while I'm still in my thirties.
三十代の女性をターゲットにした雑誌が人気を集めている。
Magazines targeting women in their thirties are gaining popularity.
WORD FORMATION:
三十 (thirty) + 代 (generation, era). Follows the standard pattern for age decades: 二十代, 三十代, 四十代, etc.
SUBDIVISIONS:
- 三十代前半: early thirties (30-34)
- 三十代半ば: mid-thirties (around 35)
- 三十代後半: late thirties (36-39)
COMMON COLLOCATIONS:
- 三十代の男性/女性: man/woman in their thirties
- 三十代向け: aimed at people in their thirties
- 三十代のうちに: 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.