Crossword clues for the word: GIBBOUS The word GIBBOUS has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for GIBBOUS Showing 1 to 4 of 4 results Clue(s) "Allmost full, as the moon." "Between halfway-showing and full, as the moon (anagram of BUGS' BIO)" "Between halfway-visible and full, as the moon (anagram of BUGS' BIO)" Hunchbacked historian contracted American