sound / timbre / Short for 音楽 (ongaku): music / speech (phonetics) / Short for 字音 (jion): Chinese-derived reading of a kanji / news, tidings

sound / Short for 音読み (on'yomi): the Chinese-derived reading of a kanji / (by extension) reading of a Chinese character outside the Japanese language; rime / Short for 音楽 (ongaku): music

a sound, voice / the cry of an animal

sound / news; tidings; word

ignorance is bliss

complete denial of knowing (an incident in question)

to know through one's own experience

to have no way of knowing; to be completely ignorant of

to make known

(Classical Japanese, archaic, honorific) to know