KNOW-NOTHINGISM

\nˈə͡ʊnˈʌθɪŋˌɪzəm], \nˈə‍ʊnˈʌθɪŋˌɪzəm], \n_ˈəʊ_n_ˈʌ_θ_ɪ_ŋ_ˌɪ_z_ə_m]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.