(arithmetic) addition

arithmetic; calculation

(rare) to do arithmetic; to calculate

triumphant, proud / skilled

strong point / triumph / regular customer

a younger sibling

one’s own younger brother / a younger male / (Kagoshima) younger brother

younger brother / younger male

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

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