a personal or private matter / (by extension) selfishness

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

personal, private / secret

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

Alternative spelling of 私達 (“we; us”)

the customer is always right

(figuratively) to wear out with one's heart and soul

cry one's eyes out

use every possible means

illegitimacy (being born out of wedlock)