a roaring success

roaring | American Dictionary

roaring
adjective, adverb
us/ˈrɔr·ɪŋ, ˈroʊr-/
A roaring fire is very large, noisy, and bright.

roaring | Business English

roaring
adjective[ before noun ]
uk /rɔːrɪŋ/us
 do a roaring trade
informal
to sell a lot of goods very quickly:
The shop opened last September and has been doing a roaring trade since then.
 a roaring success
something that is very successful:
The shares, which typically were only available to institutions, have been a roaring success.