gailyEnglishOxford American Thesaurusgaily adverb 1 she skipped gaily along the path: merrily, cheerfully, cheerily, happily, joyfully, joyously, light-heartedly, blithely, jauntily, gleefully, with pleasure. ▷antonyms miserably. 2 a harbor full of gaily painted boats: brightly, brilliantly, colorfully, flamboyantly. ▷antonyms somberly. 3 pedestrians skipped gaily into the fast-moving traffic: heedlessly, unthinkingly, thoughtlessly, without thinking, without care, without consideration; casually, nonchalantly, airily, breezily, lightly, uncaringly. ▷antonyms anxiously.