Meaning: むせいn. (Kanji=夢精) nocturnal emission, "wet dream", instance in which a man involuntarily ejaculates semen during sleepadj. (Kanji=無声) voiceless, unvoiced; silent, noiselessn. (Kanji=無性) asexual, nonsexual organism, organism which does not sexually reproducev. (Kanji=夢精する) have a nocturnal emission, have a wet dream