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plural orexes
(psychology) The affective and conative character of mental activity as contrasted with its cognitive aspect; the appetitive aspect of an act; desire, appetite. quotations
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, Guy Davenport, Tatlin!