The term MORE SLIPPERY can be broken down into four crossword solutions: OILIER (6 letters), ICIER (5 letters), EELIER (6 letters), and GREASIER (8 letters). OILIER is an adjective that means having a greater amount of oil, ICIER is an adjective that means having a greater amount of ice, EELIER is an adjective that means having a greater amount of eels, and GREASIER is an adjective that means having a greater amount of grease. All of these words describe something that is more slippery than usual.