思おもわず知しらず

adverb

without noticing; before one realizes; unconsciously

Describes an action or state that occurs naturally, without deliberate thought or awareness. Often used when something happens spontaneously or when one is caught up in a situation.

• 思おもわず知しらず涙なみだが出でた。

  Tears came to my eyes before I knew it.

• 彼かれの話はなしに思おもわず知しらず引ひき込こまれた。

  I was drawn into his story without realizing it.