白しら々じらしい

i-adjective

feigning ignorance; disingenuous

Used when someone pretends not to know something they clearly know, often with an air of innocence.

• 彼かれは白しら々じらしい顔かおで「何なんのこと？」と言いった。

  He said 'What do you mean?' with a feigned-ignorance look.

i-adjective

pure white; very clear

Rare, literal sense describing something as purely white or extremely clear; mostly found in older or literary contexts.

• 白しら々じらしい雪ゆきが一いち面めんに積つもっていた。

  Pure white snow had piled up everywhere.