PERPETUABLE

\pəpˈɛtjuːəbə͡l], \pəpˈɛtjuːəbə‍l], \p_ə_p_ˈɛ_t_j_uː_ə_b_əl]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.