unisex UK /ˈjuːnɪsɛks/US /ˈjunəˌsɛks/adjective 2noun 1 adjective2 •Not distinguished on the basis of sex or gender; suitable for any sex or gender.Kim is a unisex name. •(old-fashioned) Of or pertaining to only one sex or gender; unisexual. noun1 •The state of not being distinguished on the basis of sex or gender; the state of being suitable for any sex or gender.