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”)

(idiomatic) to serve as the other party to someone who needs advice; to give advice; to provide consultation

outside of one's field of expertise

specialty store; boutique

someone who is only knowledgeable within the field in which they specialize; a fachidiot

expert, special

academy (specialized school), vocational school