α. early Old English uuorm (probably transmission error), early Old English uuorsin (transmission error), early Old English uuorsm, Old English worsm, Old English wursm, early Middle English wirrsenn ( Ormulum), early Middle English wrusm, Middle English ruse (probably transmission error), Middle English worsum, Middle English wrusum, Middle English wursum; English regional (northern) 1800s wirsom, 1800s wursum; Scottish pre-1700 uorsum, pre-1700 vorssum, pre-1700 wersun, pre-1700 wirsome, pre-1700 wirsum, pre-1700 woorsome, pre-1700 worsam, pre-1700 worsome, pre-1700 worssome, pre-1700 woursum, pre-1700 1800s worsum, pre-1700 1800s woursum, 1700s worsom, 1800s wursome, 1900s wissum, 1900s– wirsam Scottish English /ˈwɪrs(ə)m/, 1900s– wirsim, 1900s– wirsom, 1900s– wursam, 1900s– wursom, 1900s– wursum.
β. Old English worms, Old English wurms, Old English wyrms, Old English wyrs- (in a compound, perhaps transmission error), early Middle English wrums.