OPPORTUNISM

\ɒpətjˈuːnɪzəm], \ɒpətjˈuːnɪzəm], \ɒ_p_ə_t_j_ˈuː_n_ɪ_z_ə_m]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
1919 - The Winston Simplified Dictionary
By William Dodge Lewis, Edgar Arthur Singer