Crossword clues for the word: COSMONAUT The word COSMONAUT has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for COSMONAUT Showing 1 to 5 of 5 results Clue(s) "Popovich or Gagarin, e.g." "Popovich, for one." "Yuri Gagarin, e.g." One term for a spaceman. Russian space explorer