A lot vs. Alot: 9 Grammatical Pitfalls
1890 (attested from 1860 as a foreign word), from Swahili, literally "journey, expedition," from Arabic, literally "referring to a journey," from safar "journey" (which itself is attested in English as a foreign word from 1858). Used from 1920s of various articles of clothing suitable for safaris.
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Sammet 1969, p.685.