limpyoudaoicibaDictYouDict[limp 词源字典]
limp: English has two words limp, which perhaps share a common ancestry. Neither is particularly old. The verb first crops up in the 16th century (until then the word for ‘walk lamely’ had been halt, which now survives, barely, as an adjective). It was probably adapted from the now obsolete adjective limphalt ‘lame’, a descendant of Old English lemphealt (which goes back ultimately to Indo-European *lomb-). The adjective limp is first recorded in the 18th century, and in view of the common meaning element ‘lack of firmness, infirmity’ it seems likely that it is related to the verb.
[limp etymology, limp origin, 英语词源]
limp (v.)youdaoicibaDictYouDict
1560s, of unknown origin, perhaps related to Middle English lympen "to fall short" (c. 1400), which is probably from Old English lemphealt "halting, lame, limping," which has a lone cognate in the rare Middle High German limphin, and perhaps is from a PIE root meaning "slack, loose, to hang down" (cognates: Sanskrit lambate "hangs down," Middle High German lampen "to hang down"). Related: Limped; limping. As a noun, 1818, from the verb.
limp (adj.)youdaoicibaDictYouDict
1706, "flaccid, drooping," of obscure origin, perhaps related to limp (v.).