マ
　
ッ
　
ト
　
に
しず
沈
　
む

expression, Godan verb

  1. to be knocked out, to be overwhelmed, to be flabbergasted, to be thrown for a loop.

Variations

Pronunciation Kanji Kana Is Common
　
マ
　
ッ
　
ト
　
に
しず
沈
　
む
 マットに沈む マットにしずむ

Contained Kanji Breakdown

sink, be submerged, subside
しず.む　チン　ジン (Early Jr. High, N2)
water, water radical (no. 85)
さんずい
to move on, doubtful
イン　ユ　おこた.る
wa-shaped crown radical (no. 14)
ベキ (Kentei 1)
legs radical (no. 10)
ジン　ニン　がい (Kentei 1)