Lexical Definition

‎εὐφροσύνη‎ euphrosýnē (yoo-fros-oo'-nay) joy ^G:N-F
from the same as ‎εὐφραίνω‎

gladness, joy.

• joyfulness

Abbott-Smith

εὐφροσύνη, -ης, ἡ (< εὔφρων, cheerful) [in LXX chiefly for שִׂמְחָה ;]
rejoicing, gladness: Ac 2:28 (LXX) 14:17.†

Abbott-Smith References

Liddell-Scott-Jones

εὐφροσύνη,

Epic dialect ἐϋφρ-, ἡ, (εὔφρων) mirth, merriment, γέλω τε καὶ εὐφροσύνην παρέχουσαι [Refs 8th c.BC+]; especially of a banquet, good cheer, festivily, οὐ.. τί φημι χαριέστερον εἶναι ἢ ὅτ᾽ ἐϋφροσύνη μὲν ἔχῃ κατὰ δῆμον ἅπαντα κτλ[Refs 6th c.BC+] is cheered with glad thoughts, [Refs 8th c.BC+]; festivities, [Refs 5th c.BC+]; ἡ χαρὰ καὶ ἡ εὐ. [Refs 4th c.BC+]: also in later Prose, [LXX+NT+4th c.BC+]; εὐ. ψυχῆς οἶνος πινόμενος [LXX]

__II proper name, [Refs], one of the Graces, [Refs 8th c.BC+]

_{LSJ Scripture Refs: LXX.Gen.31.27 ☩ Acts.2.28}