知らぬ顔

しらぬかお

pretending not to know, feigning ignorance

素知らぬ顔

そしらぬかお

pretending not to recognize (recognise), feigned ignorance

物知り顔

ものしりがお

a knowing look

顔見知り

かおみしり

acquaintance

訳知り顔

わけしりがお

know-it-all airs, I-know-how-it-is look

赤ら顔

あからがお

red face

知らず知らず

しらずしらず

unconsciously, unwittingly, unawares

知らん振り

しらんぷり しらんふり

pretending not to know, feigning ignorance

知らんがな

しらんがな

how should I know?, don't ask me

知らんけど

しらんけど

but I don't know; or something like that; or that's what I heard; one could assume; I guess

顔

かんばせ かお がん

face, visage

知らせ

しらせ

notice, notification

知らす

しらす

to inform, to notify

知らず

しらず

not having, unaffected by

知らんかった

しらんかった

didn't know, was unaware

知覚知

ちかくち

knowledge by acquaintance

知知武

ちちぶ チチブ

dusky tripletooth goby (Tridentiger obscurus)

知

ち

jnana (higher knowledge)

露知らず

つゆしらず

utterly ignorant, not knowing, having no idea, (being a) blithering idiot