Entry 1 sense Webster, 1913 Bizarre /bəz-är'/ · Bi·zarre · IPA /bɪˈzɑː(ɹ)/ 01 a. Odd in manner or appearance; fantastic; whimsical; extravagant; grotesque. 1. Odd in manner or appearance; fantastic; whimsical; extravagant; grotesque.