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assurance

assurance - noun

  1. A declaration that one will or will not do a certain thing: covenant, engagement, guarantee, guaranty, pledge, plight, promise, solemn word, vow, warrant, word, word of honor. See obligation.
  2. The fact or condition of being without doubt: assuredness, certainty, certitude, confidence, conviction, positiveness, sureness, surety. See certain.
  3. The quality or state of being safe: safeness, safety, security. See safety.
  4. A firm belief in one's own powers: aplomb, confidence, self-assurance, self-confidence, self-possession. See attitude. belief.