
Middle English word uglike comes from Old Norse -ligr, Old Norse uggr (Fear, apprehension.)
-ligr (Old Norse)
Suffix used to create adjectives, having the sense of -y, -ly, -like.
uggr (Old Norse)
Fear, apprehension.
uggligr (Old Norse)
Doubtful, questionable. To be feared.
ugly (Middle English)