Synonyms for mope

be low-spirited, fret, pine away, grieve, despond, droop, sink, lose heart, brood, pine, yearn, repine, despair, grumble, chafe, lament, regret, look glum, sulk, be in a funk*, give way*, look blue*, croak*, be sunk in the doldrums*, pull a long face*; see also mourn 1.

Antonyms revive*, celebrate*, cheer up.