The story
- Proto-Germanic · inherited from*ungladaz
- Proto-West Germanic · inherited from*unglad
- Old English · inherited fromunglæd
- Middle English · inherited fromunglad
- English todayunglad
From Middle English unglad, from Old English unglæd, from Proto-West Germanic *unglad, from Proto-Germanic *ungladaz, equivalent to un- + glad. Cognate with Saterland Frisian uunglääd, West Frisian ûnglêd, Dutch onglad, German Low German ungladd, German unglatt, Danish uglad, Swedish oglad, Icelandic óglaður.
Etymology from Wiktionary, CC BY-SA 4.0.