UNDEREVALUATION

\ˌʌndəɹɪvˌaljuːˈe͡ɪʃən], \ˌʌndəɹɪvˌaljuːˈe‍ɪʃən], \ˌʌ_n_d_ə_ɹ_ɪ_v_ˌa_l_j_uː_ˈeɪ_ʃ_ə_n]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd