A big spender is someone who spends a lot of money. The crossword solutions for this term are SPORT (5 letters), NABOB (5 letters), SPORTER (7 letters), PRODIGAL (8 letters), and GOODTIMECHARLIE (15 letters). SPORT is an activity involving physical exertion and skill, NABOB is a wealthy person, SPORTER is someone who participates in sports, PRODIGAL is someone who spends money recklessly, and GOODTIMECHARLIE is a slang term for a person who spends money freely.