certitude

Từ điển American Heritage Dictionary 4th

cer·ti·tude (sûrʹtĭ-to͞od', -tyo͞od')n.
1. The state of being certain; complete assurance; confidence.
2. Sureness of occurrence or result; inevitability.
3. Something that is assured or unfailing: “eager to swap the hazards of American freedom for the gray certitudes of Soviet life” (Time). See Synonyms at certainty. [Middle English, from Late Latin certitūdō, from Latin certus, certain. See certain.]

• Từ đồng nghĩa / Synonyms:
  cocksureness, overconfidence