Quick Definition
εὐθυμέω v. I am cheerful
Strong's Definition
from 2115; to cheer up, i.e. (intransitively) be cheerful; neuter comparative (adverbially) more cheerfully
KJV Usage: be of good cheer (merry)
UBS Dictionary of the Greek New Testament
verb | θυμόομαι
25.146 · Attitudes and Emotions · Encouragement, Consolation
to be encouraged, to take courage, to become encouraged to be or to become encouraged and hence cheerful In some languages the equivalent of ‘to become encouraged’ is ‘to have one’s heart return’ or ‘to have one’s liver stand up again’ or ‘to have one’s heart become hard again.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
εὐθυμέω, -@; (εὔθυιιος) ; 1. trans. to put in good spirits, gladden, make cheerful, (Aeschyl. in Plat. de rep. 2, 383 b.). Mid. to be of good spirits, to be cheerful, (Xen., Plat.). 2. intrans. to be joyful, be of good cheer, of good courage: Acts xxvii. 22, 25; Jas. v.13. (Eur. Cycel. 530; Plut. de tranquill. anim. 2 and 9.)
Mounce Concise Greek Dictionary
εὐθυμέω euthumeō 3x
to be cheerful, be in good spirits, take courage, Acts 27:22, 25; Jas. 5:13*
Abbott-Smith Greek Lexicon
** εὐθυμέω, -ῶ
(< ὔθυμος), [in Sm.: Ps 31 (32):11, Pr 15:15 * ;]
trans., to make cheerful (Æsch.).
Intrans. (Eur., Plut.; so mid. in Xen., Plat.), to be of good cheer: Ac 27:22, 25, Ja 5:13.†
Moulton & Milligan — Vocabulary of the Greek NT
εὐθυμέω. P Amh II. 1334 (early ii/A.D.) περὶ τῆς κρειθ(ῆς) τῆς ἐνθάλλου εὐθύμει, πέπρακα γάρ, ‘don’t be anxious about the young barley, for I have sold it’ (Edd.), P Iand 1338 (iv/A.D.) ἵνα μετὰ χαρᾶς σε ἀπολάβωμεν καὶ εὐθυμῆσ[αι δυνώμεθά)] oe. The verb is common with ὑγιαίνω as an epistolary phrase, e.g. P Lips I. 111° (iv/a.p.) πρὸ μὲν [πά]ντων εὔχομαι TO ὑψίστῳ Θε[ῷ] περὶ τῆς σῆς ὑγίας καὶ ὁλοκληρίας, ἵνα ὑγιένοντά σε καὶ εὐθυμοῦντα ἀπολάβῃ τὰ παρ᾽ ἐμοῦ γραμματί[δ]ια : cf. P Lond 12447 (iv/A.p.) (= III. p. 244) παρακαλῶν τὸν θεὸν ἵνα σαι ἀπολάβω εὐθυμοῦντα καὶ εὐπυγμοῦντα καὶ ὁλοκληροῦντα, P Oxy XII. 1503" (iv/A.D.) εὐθυ]μοῦντί σαι (1. σοι) καὶ εὐδαιμονοῦντι.
Liddell-Scott-Jones — Greek-English Lexicon
εὐθυμέω (euthumeō) — be cheerful. εὐθῡμ-έω, to be of good cheer, [NT+5th c.BC+]: feminine dative plural present participle εὐθυμεύσαις [Refs 3rd c.BC+]; περὶ τῆς κριθῆς εὐθύμει do not be anxious about.., [Refs 2nd c.AD+]
II. transitive, cheer, delight, τινα [Refs 4th c.BC+]:—passive, to be cheerful, [Refs 5th c.BC+]