late 14c., "act of consoling," from O.Fr. consolacion (11c., Mod.Fr. consolation) "solace, comfort; delight, pleasure," from L. consolationem (nom. consolatio-) "consoling, comforting," noun of action from consolat-, pp. stem of consolari. solace (n.) "comfort, consolation," late 13c., from O.Fr. solas, from L. solacium, from solatus, pp. of solari "to console, soothe," from PIE root *sel- "of good mood, to favor" (cf. Gk. hilaros "merry," O.E. gesælig "happy;" see silly).