antisex

adjective
an·​ti·​sex | \ ˌan-tī-ˈseks How to pronounce antisex (audio) \
variants: or antisexual \ -​ˈseksh-​(ə-​)wəl How to pronounce antisexual (audio) \

Medical Definition of antisex

: antagonistic toward sex especially : tending to reduce or eliminate the sex drive or sexual activity