From euthumos; to cheer up, i.e. (intransitively) be cheerful; neuter comparative (adverbially) more cheerfully -- be of good cheer (merry).
see GREEK euthumos
εὐθυμεῖ (euthumei) − 1 Occurrence
εὐθυμεῖν (euthumein) − 1 Occurrence
εὐθυμεῖτε (euthumeite) − 1 Occurrence