OBDURACY
Source: 566, 567
obduracy|obduration. Obduracy, or Obduration, n. hardness of heart
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Ob″du‐ra‐cy (?), n. The duality or state of being obdurate; invincible hardness of heart; obstinacy. “Obduracy and persistency.” Shak. The absolute completion of sin in final obduracy. South.