(なお)

なおる
verb (godan)
to be fixed, to recover
自動詞 intransitiveaction
See also: (なお) (transitive)
Conjugation
AffirmativeNegative
Present(なお)(なお)らない
Present polite(なお)ります(なお)りません
Past(なお)った(なお)らなかった
Past polite(なお)りました(なお)りませんでした
て form(なお)って(なお)らなくて
ている present(なお)っている(なお)っていない
ている polite(なお)っています(なお)っていません
ている past(なお)っていた(なお)っていなかった
ている past polite(なお)っていました(なお)っていませんでした
Conditional ば(なお)れば(なお)らなければ
Conditional たら(なお)ったら(なお)らなかったら
Volitional(なお)ろう
Volitional polite(なお)りましょう
Potential(なお)れる(なお)れない
Passive(なお)られる(なお)られない
Causative(なお)らせる(なお)らせない
Imperative(なお)(なお)るな
1. to be repaired, to be fixed
Describes something being restored to working condition (intransitive). The transitive pair is (なお)す (to fix/repair).
時計(とけい)(なお)りました。
The clock was fixed.
I think it will be fixed soon.
この電話(でんわ)まだ(なお)っていませんいつ(なお)ります
This phone isn't fixed yet. When will it be fixed?
The car is fixed, so I can use it starting tomorrow.
I was having trouble because my computer was broken, but it's finally fixed. I can work starting today.
2. to recover, to get better
Describes recovering from an illness or injury, or a symptom going away. Conventionally written (なお)る for this meaning, and the thing that heals takes が: 風邪(かぜ)(なお)る, (きず)(なお)る.
Have you recovered from your cold?
Using 治る for illness
My fever went away.
Using 治る for illness
I can't walk until my leg heals.
When my illness is cured, I will go back to school.
I have a headache, but I think it will go away if I take medicine.

Transitivity: 自動詞(じどうし) (intransitive). Pair: (なお) (transitive). Pattern: X(なお)る (X is fixed/heals).

Aspect:いる indicates resulting state. (なお)っている = 'is fixed/has recovered.'

Common patterns

Kanji choice: the reading is なおる either way, but the kanji signals the meaning. Use (なお)る when a broken object, a mistake, or a bad habit is put right: 時計(とけい)(なお)る, (くせ)(なお)る. Use (なお) for health - illnesses, injuries, and symptoms: 風邪(かぜ)(なお), (きず)(なお). The same split applies to the transitive pair (なお) / (なお).