Spender (noun)

1. A person who spends money freely and without restraint.
2. A person who uses up resources quickly or wastefully.

Origin:

From the english verb "to spend" meaning to use up or consume.

Examples:

1. He was known as a spendthrift, always spending money on frivolous things.
2. She was a big spender and spent all her money on clothes and shopping.
3. The company is trying to reduce costs by eliminating unnecessary spenders.
4. He's a spender, not a saver, he never thinks about tomorrow.
5. The city is a big spender on infrastructure projects.