INTERFERINGLY

\ˌɪntəfˈi͡əɹɪŋlɪ], \ˌɪntəfˈi‍əɹɪŋlɪ], \ˌɪ_n_t_ə_f_ˈiə_ɹ_ɪ_ŋ_l_ɪ]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.