IPA: /ˈædəməns/
KK: /ˈædəməns/
The quality of being very determined and not willing to change one's mind or position.
Her adamance in refusing to compromise was admirable.
Adamance is derived from the Latin word 'adamantem' (meaning unyielding or invincible), which is a form of 'adamans' (meaning untameable or unbreakable). The word combines the idea of being unyielding or resolute in one's opinions or decisions.
Think of someone who is 'unyielding' or 'invincible' in their beliefs — that's what adamance means.