INADEQUACY Scrabble 25 Words With Friends 27 Definition noun lack of an adequate quantity or number. — synonyms: insufficiency, deficiency noun a lack of competence. — synonyms: insufficiency noun unsatisfactoriness by virtue of being inadequate. — synonyms: inadequateness See all 130 words you can make from INADEQUACY → 10-letter words Words starting with I Words ending with Y ← Unscramble different letters