知らず

The regular classical negative form of verb 知る (shiru, “to know”), formed by conjugating the verb into the 未然形 (mizenkei, “irrealis or incomplete form”) of 知ら- (shira-) and adding the negation auxiliary -ず (zu).

• IPA^(key): [ɕiɾa̠zɨ]

As an affix, the resulting term usually has a downstep after the shi in shirazu.

知(し)らず • (shirazu) 

1. follows nouns to form other nouns or 形容動詞 (keiyō dōshi, “-na adjectives”), indicating that the result doesn't know the suffixed noun

   寒(さむ)さ知(し)らず

   samusa shirazu

   someone who doesn't know cold → someone who is never cold

知(し)らず • (shirazu) 

1. negative incomplete, continuative, and terminative of 知る (shiru): not knowing