Translation guide
To spend money freely or extravagantly on something enjoyable, often as a treat.
To spend a lot of money on something you want, often as a luxury or indulgence.
Literally 'scatter money', this is a common way to say you splurged or spent money freely, often with a sense of guilty pleasure.
I splurged with my bonus.
Means 'to indulge in luxury'. It's a natural way to describe treating yourself to something expensive.
Let's splurge once in a while.
Implies spending more than usual, making a financial stretch to get something nice. Often used when you decide to pay extra for quality.
I splurged and bought an expensive wine.
Literally 'not sparing money', used when you don't hesitate to spend on something you really want.
I splurge on my hobbies.
To spend generously on someone else or for a special occasion.
To buy something on a whim or in excess, often more than you need.
散財する focuses on the act of spending money freely, often with a slight negative or self-deprecating tone. 贅沢をする emphasizes the enjoyment of luxury and is more positive. Use 散財する when you feel a bit guilty, and 贅沢をする when you feel you deserve it.
I splurged because of stress (and regret it).
I splurged on a spa treatment as a rare treat.
There is no single Japanese verb that covers all uses of 'splurge'. Avoid direct translations like スプラージする. Instead, choose a phrase that matches the specific nuance: treating yourself, treating others, or impulse buying.
He splurged and treated everyone to a feast.