The term "high spender" refers to someone who spends a significant amount of money, often on luxury items or experiences. Synonyms for this term include "big spender," "lavish spender," "heavy spender," "generous spender," and "prodigious spender." Other words that could be used to describe someone who spends a lot of money might include "extravagant," "spender," "splurger," "consumer," or "shopaholic." While these terms may have slightly different connotations, they are all similar in their descriptions of someone who has a penchant for spending more money than they need to or who enjoys the finer things in life.