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sureness

sureness - noun

  1. The fact or condition of being without doubt: assurance, assuredness, certainty, certitude, confidence, conviction, positiveness, surety. See certain.
  2. Reliability in withstanding pressure, force, or stress: fastness, firmness, hardness, security, soundness, stability, stableness, steadiness, strength, sturdiness. See better. change. continue.