noun, takes genitive case の

  1. not wearing a mask (in kendo, noh, etc.).
  2. sober face.
  3. sobriety.

noun, adjectival noun or quasi-adjective, takes genitive case の

Archaism.
  1. face with no make-up, unpainted face.

Variations

Pronunciation Kanji Kana Is Common
素面 すめん

Contained Kanji Breakdown

elementary, principle, naked
ス ソ もと (5th, N1)
life (生) variant
thread
いと シ (1st, N2)
short thread radical (no. 52)
ヨウ ちいさい (Kentei 1)
little, small
ショウ こ- ちい.さい (1st, N5)
feathered stick, barb radical (no. 6)
ケツ かぎ (Kentei 1)
eight, eight radical (no. 12)
ハチ や はっ (1st, N5)
mask, face, features
メン おも つら (3rd, N3)