Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun adamant

1 sense of adamant

Sense 1
diamond, adamant -- (very hard native crystalline carbon valued as a gem)
       => carbon, C, atomic number 6 -- (an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds)
       => transparent gem -- (a gemstone having the property of transmitting light without serious diffusion)

Antonyms of adj adamant

1 sense of adamant

Sense 1
adamant, adamantine, inexorable, intransigent -- (impervious to pleas, persuasion, requests, reason; "he is adamant in his refusal to change his mind"; "Cynthia was inexorable; she would have none of him"- W.Churchill; "an intransigent conservative opposed to every liberal tendency")

INDIRECT (VIA inflexible) -> flexible -- (capable of being changed; "flexible schedules")

Similarity of adj adamant

1 sense of adamant

Sense 1
adamant, adamantine, inexorable, intransigent -- (impervious to pleas, persuasion, requests, reason; "he is adamant in his refusal to change his mind"; "Cynthia was inexorable; she would have none of him"- W.Churchill; "an intransigent conservative opposed to every liberal tendency")
       => inflexible (vs. flexible) -- (incapable of change; "a man of inflexible purpose")