The Collaborative International Dictionary of English v.0.48:

Bravado \Bra*va"do\, n., pl. Bravadoes. [Sp. bravada, bravata,
   boast, brag: cf. F. bravade. See Brave.]
   Boastful and threatening behavior; a boastful menace.
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         In spite of our host's bravado.          --Irving.
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