RECIPROCALNESS

\ɹɪsˈɪpɹəkə͡lnəs], \ɹɪsˈɪpɹəkə‍lnəs], \ɹ_ɪ_s_ˈɪ_p_ɹ_ə_k_əl_n_ə_s]\
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1871 - The Cabinet Dictionary of the English Language