certain (adj.) Old form(s): certaine , certain'st
steady, settled, fixed
MV IV.i.60[Shylock to Duke] a lodged hate and a certain loathing / I bear Antonio
TNK V.iv.21.1[Second Knight to Palamon] tottering fortune, / Who at her certain'st reels [i.e. wavers even when in her most stable condition]
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