JMdict: 1749480

素知らぬ顔 【そしらぬかお】

  1. [exp,n] feigned ignorance; pretending not to know
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
素 Elementary, Principle, Naked, Uncovered ソ, ス もと 5
知 Know, Wisdom チ し.る, し.らせる 2
顔 Face, Expression ガン かお 2