TIRELESS Scrabble 8 Words With Friends 9 Definition adjective showing sustained enthusiastic action with unflagging vitality. — synonyms: indefatigable, unflagging, unwearying adjective characterized by hard work and perseverance. — synonyms: hardworking, industrious, untiring Anagrams of TIRELESS leisters See all 197 words you can make from TIRELESS → 8-letter words Words starting with T Words ending with S ← Unscramble different letters