UNCONVENTIONAL

\ʌnkənvˈɛnʃənə͡l], \ʌnkənvˈɛnʃənə‍l], \ʌ_n_k_ə_n_v_ˈɛ_n_ʃ_ə_n_əl]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd