NONNATURAL

\nˌɒnnˈat͡ʃəɹə͡l], \nˌɒnnˈat‍ʃəɹə‍l], \n_ˌɒ_n_n_ˈa_tʃ_ə_ɹ_əl]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd