adamant
adjective
[ ˈadəm(ə)nt ]
• refusing to be persuaded or to change one's mind.
• "he is adamant that he is not going to resign"
Similar:
unshakeable,
immovable,
inflexible,
unwavering,
uncompromising,
resolute,
resolved,
determined,
firm,
rigid,
steadfast,
unswerving,
stubborn,
unrelenting,
unyielding,
unbending,
obdurate,
inexorable,
intransigent,
dead set,
iron-willed,
strong-willed,
steely,
rock-ribbed,
stiff-necked,
indurate,
adamant
noun
• a legendary rock or mineral to which many properties were attributed, formerly associated with diamond or lodestone.
Origin:
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.
