How to Say "vast sum" in Spanish
The Spanish word for “vast sum” is “fortuna” — B1 level.
English → SpanishB1
nounB1
an extremely high price

Examples
El empresario amasó una gran fortuna vendiendo tecnología.
The businessman amassed a great fortune selling technology.
Cuesta una fortuna viajar en primera clase.
It costs a fortune to travel in first class.
Sus abuelos le dejaron una pequeña fortuna.
His grandparents left him a small fortune.
Context is Key
When 'fortuna' is used with verbs like 'gastar' (to spend) or 'costar' (to cost), it almost always refers to money or wealth, not luck.
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