The story
- Old English · inherited fromfūl“foul”
- Middle English · inherited fromfulmard
- English todayfoumart
From Middle English fulmard, from Old English fūl (“foul”) + mearþ (“marten”), in reference to its offensive smell.
Words from the same roots
Old Englishfūl all →
foulFulfordFulwoodFulwellFulbeckFulbrookunfull
Etymology from Wiktionary, CC BY-SA 4.0.