ˈsuperablyadv.rare so as to be superable, in a manner that may be overcome.
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1801 J. A. FahrenkrügerBailey's Dict. Eng.-German & German-Eng. (new ed.) II. 546/1Ueberwindlich,..adv., conquerably, superably, vincibly, surmountably.
1905 Proc. Optical Convent. 86 It is easy to make oneself artificially myopic in one meridian and superably hyperopic in another.