Crossword clues for the word: RUTHLESS The word RUTHLESS has appeared as an answer to at least 10 crossword clues on different crossword puzzles. Crossword clues for RUTHLESS Showing 1 to 10 of 10 results Clue(s) Babe perhaps given comparatively little? That's cruel Boston Red Sox after 1919? Cruel Girl not so unmerciful Hard-hearted, horrible hustlers Showing no mercy Stopping at nothing Unmerciful Unsparing Would a girl be not so cruel?