Definition of “roaring” - English Dictionary

“roaring” in American English

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roaringadjective, adverb

us /ˈrɔr·ɪŋ, ˈroʊr-/

A roaring fire is very large, noisy, and bright.

(Definition of “roaring” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“roaring” in Business English

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roaringadjective [ 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.

(Definition of “roaring” from the Cambridge Business English Dictionary © Cambridge University Press)