Strong's G2431 — ἱλαρός (adjective)
hilaros (hil-ar-os') adj.
1. cheerful or merry, i.e. prompt or willing
[perhaps from the alternate form of G138]
KJV: cheerful 
Root(s): G138 
See also: G2436 
Hebrew root: αἱρέομαι
Occurrences: 1