知らず知らず

しらずしらず

unconsciously, unwittingly, unawares

上戸は毒を知らず下戸は薬を知らず

じょうごはどくをしらずげこはくすりをしらず

drinkers drink too much (and harm themselves in the process), nondrinkers drink too little (and miss out on the medicinal benefits of alcohol)

見ず知らず

みずしらず

strange, unfamiliar, unknown, new

露知らず

つゆしらず

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

汗知らず

あせしらず

prickly heat powder, baby powder, talc powder

恩知らず

おんしらず

ingratitude

恥知らず

はじしらず

shameless (person)

命知らず

いのちしらず

recklessness, daredevilry, rashness

身知らず

みしらず

self-conceit, neglecting one's health

我知らず

われしらず わがしらず

involuntarily, instinctively, without realizing

藪知らず

やぶしらず

labyrinth; maze

親知らず

おやしらず

wisdom tooth

思わず知らず

without noticing; before one realizes; before one is aware of

世間知らず

せけんしらず

ignorant of the ways of the world

情け知らず

なさけしらず

coldhearted, pitiless, merciless, heartless

もの知らず

ものしらず

stupidity; ignorance; stupid person; ignorant person

天井知らず

てんじょうしらず

skyrocketing (prices)

礼儀知らず

れいぎしらず

rudeness, impoliteness, mannerlessness, snottiness

いざ知らず

いざしらず

I don't know about... but, it may be possible for... but