The crossword solutions for the term 'GREAT TIME, SLANGILY' are 'BLAST' (5 letters) and 'GAS' (3 letters). 'BLAST' is a slang term that is used to describe something that is really enjoyable or exciting. It is often used to express enthusiasm or joy. 'GAS' is another slang term that is used to describe something that is really good or impressive. It is often used to express admiration or approval. Together, these two words can be used to describe a great time.