speedily

Etymology

From Middle English spedily, spedili, from Old English *spēdiġlīċe, ġespēdiġlīċe (“prosperously”), equivalent to speedy + -ly. Cognate with Scots spedely, spedelie (“quickly, speedily”). Compare also Old English spēdlīċe (“effectually, effectively, successfully, efficaciously, powerfully, in a manner which produces a result”).