Update
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From up- + date.
From Middle English date, from Old French date, datil, datille, from Latin dactylus, from Ancient Greek δάκτυλος (dáktulos, “finger”) (from the resemblance of the date to a human finger), probably a folk-etymological alteration of a word from a Semitic source such as Arabic دَقَل (daqal, “variety of date palm”) or Hebrew דֶּקֶל (deqel, “date palm”).
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The root jīm dāl dāl (ج د د)