Crossword clues for the word: HERMETIC The word HERMETIC has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for HERMETIC Showing 1 to 6 of 6 results Clue(s) Airtight Cloistered separatist holds mass (8) Completely airtight Island with revolutionary name impervious to external influence? Sealed so as to be airtight Tightly sealed