Abbott-Smith Manual Greek Lexicon
εὐθυμέω (G2114)
3 ** 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 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain