雲隠 くもがく
kumogakure

Noun
Suru Verb

1. vanishing behind the clouds (e.g. of the moon)

Intransitive
Noun
Suru Verb

2. vanishing; suddenly disappearing; going into hiding

Intransitive
あいつどこに雲隠 くもがくれしたのかな。
aitsudokoni kumogakure shita nokana.
I wonder where he is hiding.