RIGOROUS /ˈɹɪɡəɹəs/ ► audio Scrabble 9 Words With Friends 11 Definition adjective rigidly accurate. — synonyms: strict adjective demanding strict attention to rules and procedures. — synonyms: stringent, tight Examples “a rigorous execution of law”“a rigorous winter.” See all 33 words you can make from RIGOROUS → 8-letter words Words starting with R Words ending with S ← Unscramble different letters