ないか Meanings Expression won't; hasn't; isn't; doesn't (used to ask a question in the negative) See also: ませんか. won't you (used to make invitations, express desires or give indirect commands) Words containing ないか ではないか isn't it? はないか paintpot cuttlefish (Metasepia tullbergi) じゃないか isn't it? And 1 more. Jinuma: Japanese Dictionary · Word lists