race
Etymology tree
Proto-Indo-European *h₁reh₁s-der.
Proto-Germanic *rēsōder.
Proto-West Germanic *rās
Old English rǣs
▲
Proto-Germanic *rēsō
Old Norse rásbor.
Middle English race
English race
From Middle English race, partially from Old English rǣs (“a race, swift or violent running, rush, onset”), from Proto-West Germanic *rās; and partially from Old Norse rás (“a running, race”); both from Proto-Germanic *rēsō (“a course”), from Proto-Indo-European *h₁reh₁s- (“to flow, rush”). Cognate with Middle Low German râs ("a strong current"; whence German Low German Raas (“mad rush, rage, fury”)), Dutch ras (“a strong whirling current”), Danish ræs, Norwegian and Swedish ras, Norwegian rås.
1560s, via Middle French race from Italian razza (early 14th century), of uncertain origin. Partially displaced native Middle English kinde (“kind, type, sort, race, nature”), whence English kind. Fully displaced native Old English cnōsl.
theories
* Diez and some other scholars suggest derivation from Proto-Germanic *raitō (whence Old High German reiza (“line”) and Old Norse ríta (“to score, log, outline”)), perhaps via Lombardic *raiza (“line”), which Körting notes is a literal rendering of Latin linea sanguinis (“bloodline of descent”). Anatoly Liberman says "the semantic fit is good" but the chronology falters; he says the Germanic word went out of use before the Italian word arose, and he says the intermediary is not attested.
* Some scholars suggest derivation from Old Spanish raza, rasa, from earlier ras, res (“head of cattle”), from Arabic رَأْس (raʔs, “head”), but Italian razza predates the Spanish word according to Diez and Meyer-Lübke.
* Meyer-Lübke suggested Latin generatio as the root; Körting says "the disappearance of two initial syllables hardly seems credible", but Meyer-Lübke notes the Venetian form narazza and the Old Bellunesian form naraccia, positing that after the first syllable ge- was lost, the remaining (una) narazza came to be reanalysed as una razza.
* Gianfranco Contini suggests the Italian word comes from Old French haraz (“troop of horses”), whence Modern French haras (“breeding farm for horses; stud farm”), from Old Norse hárr (“grey-haired; hoary”). Liberman considers this derivation the most likely.
* Other suggested Latin etyma:
** radius (perhaps via Vulgar Latin *radia) (per Baist).
** radix (“root”) (per Ulrich); Liberman says "the semantic match is excellent", and race (“rhizome of ginger”) (which definitely derives from radix) shows that the phonology is plausible.
** *raptiare (“breed falcons”) (per Körting).
** The nominative of ratio (perhaps via an unattested intermediate form *razzo), as opposed to ragione which derives from the accusative rationem.
* Other implausible suggestions include Slavic raz and Basque arraca, supposedly meaning "stud animal" (Basque arrazza, "race", derives from Spanish).
Mid 16th century. From Middle French raïz, raiz, rais (“root”), from Latin radix (“root”), from Proto-Italic *wrādīks, from Proto-Indo-European *wréh₂ds.
A variant of raze.
From Middle English rasen, racen, rase (“to scrape; to shave; to erase; to rend; to cleave; etc”), from Anglo-Norman raser, rasere, rasser, Middle French raser, and Old French raser (“to shave; to demolish”), from Vulgar Latin *raso (“to shave; to scrape”), from Latin rāsus (“scraped; shaved”), the perfect passive participle of rādō (“to scrape, scratch”). Doublet of rash (etymology 2 and etymology 7).
PIE word
 *wréh₂ds
From Middle English racen, rasen (“to come apart; to pick clean, strip; to pull away, snatch; to pull down, knock down; to pull off, strip off; to pluck or tear out; to tear apart”), either:
* an aphetic form of arasen, aracen (“to pluck, pull, or tear away or out”), from Anglo-Norman aracer and Old French aracier, esracier, esrachier (“to pull off”) (modern French arracher), from Latin ērādīcāre, the present active infinitive of ērādīcō (“to root out; to annihilate, extirpate”), from ē- (variant of ex- (prefix meaning ‘away; out’) + rādīx (“root”) (from Proto-Indo-European *wréh₂ds (“root”)) + -ō (suffix forming regular first-conjugation infinitives of verbs); or
* from Anglo-Norman racer, an aphetic form of aracer (see above).