LABORIOSUS

\lˈabɔːɹɪˌɒsəs], \lˈabɔːɹɪˌɒsəs], \l_ˈa_b_ɔː_ɹ_ɪ__ˌɒ_s_ə_s]\
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1846 - Medical lexicon: a dictionary of medical science
By Robley Dunglison