()いる

おいる
ichidan verb (intransitive)
to grow old; to age
Conjugation
AffirmativeNegative
Present()いる()いない
Present polite()います()いません
Past()いた()いなかった
Past polite()いました()いませんでした
て form()いて()いなくて
ている present()いている()いていない
ている polite()いています()いていません
ている past()いていた()いていなかった
ている past polite()いていました()いていませんでした
Conditional ば()いれば()いなければ
Conditional たら()いたら()いなかったら
Volitional()いよう
Volitional polite()いましょう
Potential()いられる()いられない
Passive()いられる()いられない
Causative()いさせる()いさせない
Imperative()いろ()いるな
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.
I want to stay healthy even when I grow old.
An old dog is sunbathing.
Everyone grows old.
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.
The building has aged, and damage can be seen here and there.
I want to breathe new life into this aging town.
This company's organization is becoming worn and outdated.
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.

COMMON PATTERNS:

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