Quick Definition
ἀγαλλιάω v. I exult, am full of joy
Strong's Definition
from agan (much) and 242; properly, to jump for joy, i.e. exult
KJV Usage: be (exceeding) glad, with exceeding joy, rejoice (greatly)
UBS Dictionary of the Greek New Testament
verb | ἀγαλλίασις
25.133 · Attitudes and Emotions · Happy, Glad, Joyful
to be extremely joyful, to be overjoyed, to rejoice greatly to experience a state of great joy and gladness, often involving verbal expression and appropriate body movement In ACT 2:26 it may be impossible to say ‘my tongue rejoices.’ One may, however, translate in some languages as ‘I shout because I am so happy.’
MAT 5:12 · LUK 1:47 · LUK 10:21 · JHN 5:35 · JHN 8:56 · ACT 2:26 · ACT 16:34 · 1PE 1:6 · 1PE 1:8 · 1PE 4:13 · REV 19:7
1 ACT 2:26 In ACT 2:26 it may be impossible to say ‘my tongue rejoices.’ One may, however, translate in some languages as ‘I shout because I am so happy.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἀγαλλιάω, -@, and -doua, (but the act. is not used exc. in Lk. i. 47 [ἠγαλλίασα], in Rev. xix. 7 [ἀγαλλιῶμεν] 1, Τ' Tr WH [and in 1 Pet. i. 8 WH Tr mrz. (ἀγαλλιᾶτε), cf. WH. App. p. 1097); 1 aor. ἠγαλλιασάμην, and (with a mid. signif.) ἠγαλλιάθην (Jn. v. 35; Rec. ἠγαλλιάσθην) ; a word of Hellenistic coinage (fr. ἀγάλλομαι to rejoice, glory [yet cf. B. 51 (45)]), often in Sept. (for 53, γὴν, 12), wiv). to erult, rejoice exceedingly: Mt. v.12; Lk. x. 21; Acts ii. 26; xvi. 34; 1 Pet. i. 8; iv. 13; ἔν τινι, 1 Pet. i. 6, dat. of the thing in which the joy originates [ef. W. § 33 a.; B. 185 (160)]; but Jn. v. 35 means, ‘to rejoice while his light shone’ [i. e. in (the midst of) ete.]. ἐπί τινι, Lk. i. 47; foll. by ἵνα, Jn. viii. 56 that he should see, rejoiced because it had been promised him that he should see. This divine promise was fulfilled to him at length in paradise; cf. W. 339 (318); B. 239 (206). On this word see Gelpke in the Stud. u. Krit. for 1849, p. 645 sq.
Mounce Concise Greek Dictionary
ἀγαλλιάω agalliaō 11x
to celebrate, praise; usually in the middle in the NT (ἀγαλλιάομαι) to exult, rejoice exceedingly; to desire ardently, Jn. 8:56
Abbott-Smith Greek Lexicon
† ἀγαλλιάω, -ῶ, Hellenistic form of cl. ἀγάλλω, to glorify, mid. -ομαι, to exult in;
[in LXX (most freq. in Pss.) chiefly for גיל, רנן pi.;]
to exult, rejoice greatly: seq. ἐπί, c. dat., Lk 1:47; c. dat. mod., I Pe 1:8, Re 19:7. Mid., with same sense: Mt 5:12, Lk 10:21, Ac 2:26, 16:34, I Pe 4:13; seq. ἵνα, Jo 8:56; ἐν, Jo 5:35 (1 aor. pass. perh. as mid.; but v. Mozley, Psalter, 5), I Pe 1:6 (Cremer, 590).†
Liddell-Scott-Jones — Greek-English Lexicon
ἀγαλλιάω (agalliaō) — to rejoice. ἀγαλλι-άω, late form of ἀγάλλομαι, rejoice exceedingly, [NT+3rd c.AD+]: future -άσομαι[LXX]: aorist ἠγαλλιᾱσάμην[LXX+NT]—This family of words seems also to have been used in malam partem, ἀγαλλιάζει· λοιδορεῖται, ἀγάλλιος· λοίδορος, ἀγαλμός· λοιδορία, [Refs 5th c.AD+]