From Longman Dictionary of Contemporary Englishbrilliantbril‧liant /ˈbrɪljənt/ ●●●S2W3 adjective 🔊 🔊 1BRIGHTbrightbrilliant light or colour is very bright and strong 🔊 She closed her eyes against the brilliant light. 🔊 We sat outside in the brilliant sunshine. 🔊 She was dressed in brilliant white.► see thesaurus at bright, colour2GOOD ENOUGHclever extremely clever or skilful 🔊 I think that’s a brilliant idea. 🔊 a brilliant performance 🔊 a brilliant young musician► see thesaurus at intelligent3excellent British EnglishGOOD/EXCELLENTexcellent 🔊 The film was absolutely brilliant.► see thesaurus at goodGrammarIn this meaning, brilliant is not used with ‘very’. You say: We had an absolutely brilliant time.✗Don’t say: We had a very brilliant time.4SUCCESSFULsuccessful very successful 🔊 He had a long and brilliant career. 🔊 The project was a brilliant success. —brilliantly adverb 🔊 The sun was shining brilliantly. 🔊 The goalkeeper played brilliantly.