rhodomontade: braggadocio: vain and empty boasting; vainglorious boasting or bragging; pretentious, blustering talk. (Dictionary.com)Wow.Not just an unusual word, but one I don’t think I’ve ever even seen before. I came across it in the following context:

…now Halifax asked Churchill ‘to come out in the garden with him’ for a talk. Before that Halifax told Cadogan, ‘I can’t work with Winston any longer.’ Cadogan: ‘I said, “Nonsense: his rhodomontades probably bore you as much as they do me, but don’t do anything silly under the stress of that.”‘ (from Five Days in London: May 1940, page 153 by John Lukacs)

(Do you think Cadogan actually used the word “rhodomontades” in conversation?!)