hypersexual
[ hahy-per-sek-shoo-uh l or, esp. British, -seks-yoo- ]
/ ˌhaɪ pərˈsɛk ʃu əl or, esp. British, -ˈsɛks yu- /
adjective
unusually or excessively active in or concerned with sexual matters.
noun
a person who is hypersexual.