G0020
ἀγαλλίασις
joy
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)
Full Thayer's lexicon entry
ἀγαλλίασις — agallíasis
ἀγαλλίασις, (εως, ἡ (ἀγαλλιάω), not used by secular writers but often by the Sept.; exultation, extreme joy: Luk 1:14; Luk 1:44; Act 2:46; Jud 1:24; Heb 1:9 (from Psa 44:8 ) oil of gladness with which persons were anointed at feasts (Psa 23:5), and which the writer, alluding to the inaugural ceremony of anointing, uses as an emblem of the divine power and majesty to which the Son of god has been exalted.
5 occurrences
Luke (2), Acts (1), Hebrews (1), Jude (1)