Synonyms of brilliantly

2 Syllables
brightly, gaily
3 Syllables
shiningly, alertly, glaringly, flashily, joyfully, prudently, blazingly, dazzlingly, gleamingly, glowingly, laughingly, radiantly, sparklingly, lustrously
4 Syllables
discerningly, colorfully, sagaciously, luminously, glisteningly
5 Syllables
comprehendingly, perspicaciously, intelligently, intellectually