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

welcome home (said by a person greeting another coming back home, a stock phrase required by the Japanese etiquette)

(idiomatic) deceased person

necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

unnecessary

needlessness

necessary evil

sagacious / genius / excellence