authoritatively
adverb /ɔːˈθɒrətətɪvli/
/əˈθɔːrəteɪtɪvli/
- in a way that shows you expect people to respect or obey you
- He authoritatively stated that classic literature was irrelevant to the poor.
Oxford Collocations DictionaryAuthoritatively is used with these verbs:- speak
- in a way that can be trusted as true and correct
- She can speak authoritatively on these issues.