(formal) first-person singular pronoun: I, me

personal, private / secret

a personal or private matter / selfishness / privacy, secrecy / (women's speech, obsolete) a brother-in-law

Alternative spelling of 私達 (“we; us”)

private; mine

whistle, instrument that can be played by blowing

comparison / obvious

ignorance is bliss

complete denial of knowing (an incident in question)

to know through one's own experience