Definition of adamant:
impervious to pleas, persuasion, requests, reason
Synonyms of adamant:
adamantine, inexorable, intransigent, stubborn, inflexible, unyielding, obdurate, rigid, unbending, uncompromising
Opposite/Antonyms of adamant:
flexible, yielding, pliant, soft, submissive, supple, receptive, compliant, tractable
Sentence/Example of adamant:
The eyes beneath the coifed brow with its fine network of wrinkles were adamant.