Middle English word watyradyr comes from Old English nædre (Snake, serpent.), Old English wæter (Water.)

Detailed word origin of watyradyr

Dictionary entry	Language	Definition
nædre	Old English (ang)	Snake, serpent.
wæter	Old English (ang)	Water.
wæternædre	Old English (ang)	A watersnake.
watyrnedyre	Middle English (enm)

Words with the same origin as watyradyr