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Adjective: adamant  a-du-munt
  1. Impervious to pleas, persuasion, requests, reason
    "he is adamant in his refusal to change his mind";
    - adamantine, inexorable, intransigent
Noun: adamant  a-du-munt
Usage: archaic
  1. Very hard native crystalline carbon valued as a gem
    - diamond

Derived forms: adamants

See also: inflexible

Type of: atomic number 6, C, carbon, transparent gem

Encyclopedia: Adamant, Vermont