gaiety
From LSJ
τὸ ἓν καὶ τὸ ὂν πολλαχῶς λέγεται → the term being and the term one are used in many ways, one and being have various meanings, one and being have many senses
subs.
P. and V. εὐθυμία, ἡ (Xen.). Pleasure, delight: P. and V. τέρψις, ἡ, ἡδονή, ἡ, χαρά, ἡ; see delight.