determined not to change your mind or to be persuaded about something. Eva was adamant that she would not come.

There are nine meanings listed in OED's entry for the word adamant, two of which are labelled obsolete. See 'Meaning & use' for definitions, usage, ...

​in a way that shows you are determined not to change your mind or to be persuaded about something. His family were adamantly opposed to the marriage.

unwilling to be persuaded to change an opinion or decision: She was adamant about becoming a dancer.

Definition of adamantine adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, ...

very sure of what you think and not willing to change your opinion. непреклонный [ + (that) ] They are adamant that they have not broken any rules.

​very strong and impossible to break. Questions about grammar and vocabulary? Find the answers with Practical English Usage online, your indispensable guide ...

adjective · utterly unyielding in attitude or opinion in spite of all appeals, urgings, etc. Synonyms: uncompromising, rigid, inflexible. Antonyms: yielding, ...

The meaning of ADAMANT is unshakable or insistent especially in maintaining a position or opinion : unyielding. How to use adamant in a sentence.