TBESG:ἱλαρότηςcheerfulnessG:N-F ἱλαρότης, -ητος, ἡ (< ἱλαρός), [in LXX: Pro.18:22 (רָצוֹן)* ;] cheerfulness: Rom.12:8.† (AS)
ἱλαρός hilaros hil-ar-os' From the same as G2436; propitious or merry (“hilarious”), that is, prompt or willingKJV Usage: cheerful.