paralysis (n.)youdaoicibaDictYouDict[paralysis 词源字典]
1520s, from Latin paralysis, from Greek paralysis "paralysis, palsy," literally "loosening," from paralyein "disable, enfeeble," from para- "beside" (see para- (1)) + lyein "loosen, untie" (see lose).

Figurative use from 1813. Earlier form was paralysie (late 14c., see palsy). Old English equivalent was lyft adl (see left (adj.)) or crypelnes "crippleness."[paralysis etymology, paralysis origin, 英语词源]