Crossword clues for the word: GIANTLEAP The word GIANTLEAP has appeared as an answer to at least 1 crossword clue on different crossword puzzles. Crossword clues for GIANTLEAP Showing 1 to 1 of 1 results Clue(s) """That's one small step for man, one ___ for mankind"" (Neil Armstrong's words upon stepping on the moon): 2 wds."