STEP Greek Lexicon: ἀγαλλίασις

ἀγαλλίασις, -εως, ἡ

(ἀγαλλιάω), [in LXX (most frequently in Pss. and often coupled with εὐφροσύνη, as Ps 44(45):15) chiefly for גִּיל ;]

exultation, exuberant joy: Luk.1:44, Act.2:46, Heb.1:9, Ju 24; χαρὰ καὶ ἀ., Luk.1:14 (Cremer, 592).†

(AS)