()いる

おいる
ichidan verb (intransitive)
to grow old; to age
1. to grow old; to age
To become elderly or advanced in years. Often used for people and animals.
(おや)()いてきた。
My parents have also grown old.
()いても元気(げんき)でいたい。
I want to stay healthy even when I grow old.
()いた(いぬ)日向(ひなた)ぼっこをしている。
An old dog is sunbathing.
(ひと)(だれ)でも()いていく。
Everyone grows old.
祖母(そぼ)()いてもなお、毎日(まいにち)散歩(さんぽ)(つづ)けている。
Even in her old age, my grandmother continues her daily walks.
2. to become worn; to decline
Figuratively, when something loses its vitality or freshness.
()()いている。
The tree has aged.
建物(たてもの)()いて、あちこちに(いた)みが()える。
The building has aged, and damage can be seen here and there.
()いた(まち)(あたら)しい(かぜ)()()みたい。
I want to breathe new life into this aging town.
この会社(かいしゃ)組織(そしき)()いてきている。
This company's organization is becoming worn and outdated.
文化(ぶんか)()いて、(あたら)しいものが()まれなくなった。
The culture has grown stale and stopped producing anything new.

()いる is an intransitive verb (自動詞(じどうし)). It is classified as an ichidan verb but has some irregular features from classical Japanese. There is no transitive pair.

ASPECT ({ている}):
()いている indicates an ongoing or resulting state of being old.

CONJUGATION:

  • ()いる (dictionary form)
  • ()いて (te-form)
  • ()いた (past)

COMMON PATTERNS:

  • ()いてもなお - even in old age
  • ()いた(おや) - aged parents
  • (とし)()って()いる - to grow old with age

LITERARY NOTE:
This verb has a somewhat literary or formal feel. In everyday speech, (とし)()る is more commonly used to express aging.