The term 'Pretty Cool' can be described by four different crossword solutions: NEAT (4 letters), NIPPY (5 letters), NIFTY (5 letters), and TENBELOW (8 letters). NEAT is an adjective meaning tidy, orderly, or well-arranged. NIPPY is an adjective meaning brisk, lively, or energetic. NIFTY is an adjective meaning attractive, stylish, or fashionable. Finally, TENBELOW is an adjective meaning very cold, especially referring to temperatures below 10 degrees Celsius. All of these words can be used to describe the phrase 'Pretty Cool', which is often used to express approval or admiration.