This is the 6313th most frequent Catalan word.
multada
"Multada" in Catalan means "fine" or "penalty" (specifically referring to a monetary fine).
Here, 'multada' is used as a past participle in the passive voice, showing that the subject (she) received a fine.
Va ser multada per excedir el límit de velocitat.
She was fined for exceeding the speed limit.
In this sentence, 'multats' is the masculine plural form of 'multada', used in a future passive voice construction.
Tots els vehicles mal aparcats seran multats.
All improperly parked vehicles will be fined.
'Multes' is the plural noun form derived from 'multada', referring to fines in general.