orexis /əˈɹɛksɪs/ noun1 •The affective and conative character of mental activity as contrasted with its cognitive aspect; the appetitive aspect of an act; desire, appetite.A sweet orexis rising in his cock, a blush of fever mixing tickles in his balls, Adriaan slid his briefs off and began to lay out the makings for supper. — 1974 formsorexes