Definition of adamant in English:



  • Refusing to be persuaded or to change one's mind.

    ‘he is adamant that he is not going to resign’
    • ‘But he is adamant that there is not a word of truth in any of these stories, and that, for the time being at least, he is here to stay.’
    • ‘We tried to persuade them to let us show the film at Edinburgh, but Venice's new director was adamant that we couldn't.’
    • ‘She's adamant that she'll begin an indefinite hunger strike once she reaches jail.’
    • ‘At the time, they were adamant that women were queuing up for copies.’
    • ‘The group is adamant that these protests will continue until the club is closed.’
    • ‘But the peace protesters were adamant that civil disobedience was the only course of action left to them.’
    • ‘The calls stopped abruptly that weekend, but Frisk is adamant that his decision is final.’
    • ‘College authorities are adamant that the issue has been dealt with.’
    • ‘When I started this site, I was adamant that no personal details of my life would find their way on to these pages.’
    • ‘He is adamant that he will never marry again and guards his new-found freedom fiercely.’
    • ‘The biotech companies remain adamant that they will not foot the bill, and that it is a matter for insurance by farmers.’
    • ‘The port authority has been adamant that a split train unloading system was not an option.’
    • ‘The mast has been shown to adhere to safe radiation levels but Ryan is adamant that it gives him headaches and dizzy spells.’
    • ‘Findlay is no less adamant when it comes to future funding for the company.’
    • ‘Sampson is adamant in her belief that language requirements for admission should be stricter.’
    • ‘They were adamant that they would not allow the council to carry out work on the house nor the family to take up residence.’
    • ‘Andrew was adamant that his son would not suffer the horrors he had.’
    • ‘Many of them, I am afraid, are simply adamant in their views and are not interested in the evidence.’
    • ‘However, Maria is adamant that gender has never been an issue in her career.’
    • ‘However, the spokesman was adamant that the nursery had not been forced out of the church hall by rent increases.’
    unshakeable, immovable, inflexible, unwavering, uncompromising, resolute, resolved, determined, firm, rigid, steadfast
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mass nounarchaic
  • A legendary rock or mineral to which many properties were attributed, formerly associated with diamond or lodestone.

    • ‘As for the magical metal, asiceton, it sounds like adamant.’


Old English (as a noun), from Old French adamaunt-, via Latin from Greek adamas, adamant-, ‘untameable, invincible’ (later used to denote the hardest metal or stone, hence diamond), from a- ‘not’ + daman ‘to tame’. The phrase to be adamant dates from the 1930s, although adjectival use had been implied in such collocations as ‘an adamant heart’ since the 16th century.