Godan verb, intransitive verb

Usu. as 真面目くさった or 真面目くさって.
  1. to become extremely serious (in attitude), to look solemn, to assume a solemn air.

Variations

Pronunciation Kanji Kana Is Common
 
 
 
真面目くさる まじめくさる
 
真面目腐る まじめくさる
 
 
 
 
マジメ腐る マジメくさる
 
 
 
 
まじめ腐る まじめくさる

Contained Kanji Breakdown

true, reality, Buddhist sect
シン ま まっ (3rd, N4)
ten
ジュウ ジッ ジュッ (1st, N5)
tool, utensil, means
グ そな.える つぶさ.に (3rd, N3)
daybreak, dawn, morning
タン あき.らか あきら (11th, N1)
day, sun, Japan
ひ にっ ニチ (1st, N5)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
eight, eight radical (no. 12)
ハチ や はっ (1st, N5)
mask, face, features
メン おも つら (3rd, N3)
eye, class, look
め モク ボク (1st, N4)