済す なす to settle (a debt or matter) Meanings godan verb, transitive, obsolete to settle (a debt or matter); to pay back (money or goods) archaic to fulfill one's obligation of payment; to pay in full Its kanji 済 サイ、セイ · す.む、-ず.み、-ずみ、す.まない、す.ます、-す.ます、すく.う、な.す、わたし、わた.る settle (debt, etc.), relieve (burden), finish, come to an end, excusable, need not