C2 noun /ˈspɛndˌθrɪft/
spendthrift
dépensier
Meaning
A person who spends money extravagantly or wastefully.
Example
The young prince was known as a spendthrift, wasting his fortune on lavish parties.
Le jeune prince était connu comme un dépensier, gaspillant sa fortune dans des fêtes somptueuses.