歳

Kanji

 * 1) year

Usage notes
Often abbreviated to much simpler, for example in , or , as opposed to ,. The phrase "twenty years old" uses jukujikun reading and pronounced  using the tradition Japanese counter tsu/chi. Similar native-Japanese readings for “thirty years old” and beyond also occur more rarely.

Etymology 2
From. First attested in Japanese in the early 800s.

Suffix

 * 1)  -year-old