Crossword clues for the word: UNCTUOUS The word UNCTUOUS has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for UNCTUOUS Showing 1 to 5 of 5 results Clue(s) Oily Sickeningly suave Slippery Slippery or greasy Sycophantic global organisation caught out over America