Definitions for adamantly
Random House Webster's College Dictionary
ad•a•mantˈæd ə mənt, -ˌmænt(adj.)
utterly unyielding in attitude or opinion; inflexible.
(n.)any unyieldingly hard substance.
a legendary stone of impenetrable hardness, formerly sometimes identified with the diamond.
Origin of adamant:
1350–1400; < OF adamaunt < L adamant-, adamas hard metal, diamond < Gk
"adamantly opposed to the marriage"
In an immovable or inflexible manner.
She is adamantly denying any such statement.