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The verb is derived from Middle English ridden (“to remove debris, obstructions, etc., from (a place), to clear; to complete (something unfinished); to free (someone or something); to relieve (someone); etc.”), probably from Old English *ryddan (“to remove debris, obstructions, etc., from (a place), to clear”) (the past participle form ġeryd is attested), from Proto-Germanic *riudijaną (“to clear”), from Proto-Indo-European *Hrewdʰ- (“to clear land”), or possibly from *Hrew- (“to dig out, tear out; to open; to acquire”). The verb was probably also influenced by the following: * Middle English redden (“to rescue (someone), deliver, save; to rid (someone) of a burden; to free (someone)”) (from which redd (obsolete except Northern England, Scotland) is partly derived), from Old English hreddan (“to deliver, rescue, save; to free; to recover; to take away”), from Proto-West Germanic *hraddjan (“to rescue, save”), from Proto-Germanic *hradjaną (“to rescue, save; to free; to loosen”), possibly ultimately from Proto-Indo-European *kret- (“to move quickly; to rattle; to shake”); and * Middle English reden (“to arrange; to get ready, prepare; to put in order, tidy; to remove debris, obstructions, etc., from (a place), to clear; to unblock; etc.”) (whence rede (chiefly Scotland, archaic)), from Old English rǣdan, Early Old English rēdan, from Proto-West Germanic *raidijan (“to arrange”), from Proto-Germanic *raidijaną (“to arrange”), ultimately from Proto-Indo-European *h₂rey- (“to arrange; to count, count out”). The adjective is derived from rid, the past participle of the verb. The noun is derived from the verb. As regards noun etymology 1, noun sense 1 (“progress which has been made; speed”), compare verb etymology 1, verb sense 1.4.5 (“to complete or get through (a task, or work)”). cognates * Dutch redden (“to save, deliver”) * German retten (“to save, deliver”), reuten (“to clear”), roden (“to clear”) * Old Frisian hredda (“to save”) * Old Norse hrōðja (“to clear, strip”), Old Norse ryðja (“to clear, empty”)

The adjective is derived from rid, the obsolete past participle form of ride.