(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

grandson

(music) etude

voluntary practice by oneself (as opposed to mandatory group practice)

(education) workbook

(formal) we, us