pansexualist
/panˈsɛkʃʊəlɪst/ /panˈsɛkʃʊlɪst/ /panˈsɛkʃ(ə)lɪst/adjective
= pansexual.
noun
A believer in or advocate of pansexualism or pansexuality; a pansexual person.
Origin
1920s; earliest use found in William McDougall (1871–1938), psychologist. From pan- + sexual noun + -ist, after pansexualism. Compare French pansexualiste, adjective.