同(おな)い年(どし)

おないどし
noun, no-adjective
same age
societyperson
1. same age, of the same age
Being born in the same year; having the same age as someone else.
私(わたし)たちは同(おな)い年(どし)だ。
We are the same age.
同(おな)い年(どし)の友達(ともだち)。
A friend of the same age.
彼(かれ)と彼女(かのじょ)は同(おな)い年(どし)らしい。
Apparently the two of them are the same age.
同(おな)い年(どし)だと知(し)って親近感(しんきんかん)がわいた。
I felt a sense of closeness when I learned we were the same age.

Pronunciation

Note the unusual reading おない for 同(おな)い, which only appears in this word.

Usage

Commonly used when discovering someone shares your birth year, often creating a sense of connection or equality.

Common patterns

  • 同(おな)い年(どし)だ: to be the same age
  • 同(おな)い年(どし)の: of the same age (attributive)

Cultural note

In Japan, discovering someone is 同(おな)い年(どし) often shifts the relationship dynamic, as age-based hierarchies (先輩(せんぱい)/後輩(こうはい)) become less relevant.

Related words

Related Words

Related: 同年代(どうねんだい) (same generation)
Related: 同期(どうき) (same year)
Related: ため (same age (casual slang)
general
Added 2026.2.4 23:18 · Revised 2026.10.6 16:39
10000/10051_onaidoshi