Stupor

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late Middle English: from Latin, from stupere ‘be amazed or stunned’.

wiktionary

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Late Middle English, borrowed from Latin stupor(“insensibility, numbness, dullness”). Distantly related (from Proto-Indo-European, via Proto-Germanic) to stint, stub, and steep.

etymonline

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stupor (n.)

late 14c., from Latin stupor "insensibility, numbness, dullness," from stupere "be stunned" (see stupid).