conclusivelyadverb
uk/kənˈkluː.sɪv.li/us/kənˈkluː.sɪv.li/C2 without any doubt:
It is impossible to demonstrate/prove conclusively that the factory is responsible for the pollution.
Thesaurus: synonyms and related words
Certainty
- (as) clear as day idiom
 - (as) sure as eggs is eggs idiom
 - and that's flat! idiom
 - assured
 - assuredly
 - bet
 - cut and dried
 - decided
 - decidedly
 - definite
 - definitely
 - doubt
 - indeed
 - natch
 - pronounced
 - proof positive
 - seal
 - set/put the seal on sth idiom
 - shadow
 - signed and sealed idiom
 
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