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Flinthearted has 7 synonyms. The top synonyms for flinthearted are unresponsive, unmerciful, stonyhearted, hardhearted, hard of heart, coldblooded, cold of heart. Browse the full list below.
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| Random | DefinitionA common synonym for flinthearted is unresponsive. Other synonyms include unmerciful, stonyhearted, hardhearted, hard of heart.
Flinthearted has 7 synonyms listed on Thesaurasize.
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