adjective
1.
marked by or suggestive of lighthearted ease of mind and spirit
a cheerful smile
Synonyms: blithe, cheery, ||chirk, chirpy, chirrupy, lightsome, sunbeamy, sunny; compare lively 1
Related Word: airy, carefree, debonair, jaunty; animated, gay, lighthearted, lively, vivacious; buoyant, corky
Idioms: in good ( or high) spirits, of good cheer
Contrasted words: blue, dejected, depressed, melancholy; dispirited, heavyhearted; joyless, mournful, sorrowful, woeful; dour, morose, saturnine, sullen; doleful, lugubrious; austere, forbidding, grim, stern
Antonyms: gloomy, glum
2.
Synonyms: glad 2, bright, cheery, radiant
Antonyms: cheerless