RESPONSIBL

\ɹɪspˈɒnsəbə͡l], \ɹɪspˈɒnsəbə‍l], \ɹ_ɪ_s_p_ˈɒ_n_s_ə_b_əl]\
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1919 - The Concise Standard Dictionary of the English Language
By James Champlin Fernald