UNTRAVERSABLE

\ʌntɹɐvˈɜːsəbə͡l], \ʌntɹɐvˈɜːsəbə‍l], \ʌ_n_t_ɹ_ɐ_v_ˈɜː_s_ə_b_əl]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd