adamantly

adverb
ad·​a·​mant·​ly | \ ˈa-də-mənt-lē How to pronounce adamantly (audio) , -ˌmant-\

Definition of adamantly

: in an adamant manner : with great insistence or determination They adamantly refused to answer any more questions. He adamantly denies the allegations. Although flexible on the subject of research, she adamantly opposes killing animals for food.— Bettyann Kevles

First Known Use of adamantly

1897, in the meaning defined above

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