"Valence, or hedonic tone, is the affective quality referring to the
intrinsic attractiveness/'good'ness (positive valence) or
averseness/'bad'-ness (negative valence) of an event, object, or
Alternatively, valence, or hedonic tone, is the affective quality
referring to the intrinsic attractiveness/"good"-ness (positive
valence) or averseness/"bad"-ness (negative valence) of experience.
Suffering, or more generally hedonically sub-zero experience, is the
intrinsic valence carrier of disvalue in the universe.
(Credit to David Pearce and Lucas Perry for this definition.)