(もぐ)()

もぐりこむ
godan verb
to slip into; to crawl under; to sneak into
1. to crawl under; to slip into (a space)
To physically get under or inside something, such as a blanket, a bed, or a narrow space.
布団(ふとん)(もぐ)()む。
Slip into the futon.
(ねこ)がベッドの(した)(もぐ)()んだ。
The cat crawled under the bed.
(さむ)くて毛布(もうふ)(もぐ)()んで()たくない。
It's so cold that I've burrowed into my blanket and don't want to come out.
2. to sneak into; to infiltrate
To enter a place secretly or without authorization.
スパイが組織(そしき)(もぐ)()んだ。
A spy infiltrated the organization.
コンサートにチケットなしで(もぐ)()もうとした。
I tried to sneak into the concert without a ticket.
記者(きしゃ)身分(みぶん)(かく)して工場(こうじょう)(もぐ)()んだ。
The reporter concealed their identity and infiltrated the factory.

USAGE:
(もぐ)()む is a compound verb combining (もぐ)る (to dive, to go under) and ()む (into). The ()む suffix adds the nuance of going deep inside or fully entering.

COMMON COLLOCATIONS:

  • 布団(ふとん)(もぐ)()む (to slip into a futon)
  • ベッドに(もぐ)()む (to crawl into bed)
  • 組織(そしき)(もぐ)()む (to infiltrate an organization)

CONJUGATION:
Godan verb (mu-row): (もぐ)()まない / (もぐ)()みます / (もぐ)()んで