1375-1425; (v.) late Middle English < Middle Frenchrecompenser < Late Latinrecompēnsāre, equivalent to Latinre-re- + compēnsāre (see compensate); (noun) late Middle English < Middle French, derivative of recompenser
underrecompense, verb (used with object), underrecompensed, underrecompensing, noun
late 14c. (recompensation), from O.Fr. recompense (13c.), from L.L. recompensare, from L. re- "again" + compensare "balance out," lit. "weigh together" (see compensate). The verb is attested from 1422.