Adamant
Synonyms Unshakeable, inflexible, uncompromising, resolved, firm, steadfast, stubborn, unyielding, obdurate, intransigent, iron-willed, steely, stiff-necked, immovable, unwavering, resolute, determined, rigid, unswerving, unrelenting, unbending, inexorable, dead set, strong-willed, rock-ribbed, and indurate.
Example Sentences
She remained adamant about her decision.
He was adamant in his beliefs.
They were adamant on starting early.
She’s adamant that it’s the truth.