indecent UK /ɪnˈdiːs(ə)nt/US /ɪnˈdi.sənt/ adjective3 •Offensive to good taste.indecent videos •Not in keeping with conventional moral values; improper, immodest, or unseemly. •Generally unacceptable for public broadcasting but not legally obscene. formsindecenter · more indecent · indecentest · most indecent