a personal or private matter / (by extension) selfishness

(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

(literary) they (about women or girls)

impossible to understand, utterly confused

tilt one's head in confusion / (idiomatic) be puzzled

a Japanese word of ancient Japanese origin (as opposed to a word borrowed from Chinese, or composed in Japan from Chinese-derived roots) / Japanese songs or poetry (such as tanka)