Crossword clues for the word: LIGHTWEIGHT The word LIGHTWEIGHT has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for LIGHTWEIGHT Showing 1 to 12 of 12 results Clue(s) Boxer is not serious Boxing category Boxing classification Frivolous boxer Insignificant Insubstantial Not a big-time mover and shaker Person of little importance Trivial boxer Trivial pugilist Type of boxer Very unimportant person.