沼ぬまる

godan verb (-ru), intransitive verb

get hooked on; become obsessed with

Internet slang for becoming deeply absorbed in a hobby, game, series, or fandom. Often used with に or で to mark the object of obsession.

• 最さい近きん、あのアニメに沼ぬまってる。

  Lately I've been totally hooked on that anime.

• 友とも達だちに勧すすめられたゲームにすっかり沼ぬまってしまった。

  I got completely obsessed with the game my friend recommended.

godan verb (-ru), intransitive verb

be stuck in a slump; struggle to progress

Video game slang for being stuck at a certain rank or unable to improve. Often used with で to indicate the rank or situation.

• ランクマッチで沼ぬまってて、なかなか上あがれない。

  I'm stuck in ranked matches and just can't climb.