Headless

wiktionary

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From Middle English heedles, hevedles, from Old English hēafodlēas(“headless”), equivalent to head +‎ -less. Cognate with Dutch hoofdloos(“headless”), Danish hovedløs(“headless”), Swedish huvudlös(“headless”), Icelandic höfuðlaus(“headless”).

etymonline

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headless (adj.)

late Old English, heafedleas; see head (n.) + -less. Late 14c. as "rulerless, lacking a leader." Related: Headlessly; headlessness. Similar construction in Dutch hoofdeloos, German hauptlos, Danish hovedlös.