NONPROPRIETARY

\nˌɒnpɹəpɹˈa͡ɪ͡ətəɹi], \nˌɒnpɹəpɹˈa‍ɪ‍ətəɹi], \n_ˌɒ_n_p_ɹ_ə_p_ɹ_ˈaɪə_t_ə_ɹ_i]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd