OTIOSE Meaning of OTIOSE in English o ‧ ti ‧ ose /ˈəʊtiəʊs, ˈəʊʃəs $ ˈoʊʃioʊs, ˈoʊti-/ BrE AmE adjective formal unnecessary Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012