This is the 13241st most frequent Swedish word.
trippelt
"Trippelt" means "triply" or "threefold" in English.
In this sentence, "trippelt" is used as an adverb indicating a quantity three times as large.
Han köpte trippelt så mycket som förra gången.
He bought triple as much as last time.
Here, "trippelt" describes the degree to which the result exceeded expectations.
Resultatet var trippelt bättre än väntat.
The result was triple better than expected.
"Trippelt" modifies "belopp" to indicate multiplication of the quantity by three.