BRILLIANCY /ˈbɹɪljənsi/ Scrabble 17 Words With Friends 21 Definition noun a quality that outshines the usual. — synonyms: luster, lustre, splendor, splendour Examples “His brilliancy lay in combining old concepts from far-flung fields into a new idea.” See all 168 words you can make from BRILLIANCY → 10-letter words Words starting with B Words ending with Y ← Unscramble different letters