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The Collaborative International Dictionary

Dashism

Dashism \Dash"ism\ (-[i^]z'm), n. The character of making ostentatious or blustering parade or show. [R. & Colloq.]

He must fight a duel before his claim to . . . dashism can be universally allowed.
--V. Knox.

Wiktionary

dashism

n. (context rare colloquial dated English) The character of making ostentatious or blustering parade or show.