PROFICIENCY /pɹəˈfɪʃənsi/ Scrabble 23 Words With Friends 26 Definition noun the quality of having great facility and competence. noun skillfulness in the command of fundamentals deriving from practice and familiarity. — synonyms: technique Examples “a test of proficiency in English” See all 230 words you can make from PROFICIENCY → 11-letter words Words starting with P Words ending with Y ← Unscramble different letters