close friend, bosom buddy / crony, chum

respond, reply, answer (a question, call, etc.) / accept, admit, agree, consent / in accordance with / adequate, balanced, fitting, suitable

(rare) an acceptance, admittance, agreement, consent

a surname

responsive / responsible / corresponding / receptive / related / applicable / suitable

(chiefly women's speech) first person singular pronoun: I, me

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

a personal or private matter / (by extension) selfishness

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

personal, private / secret