The story
- Old English · derived from*forswǣtan“to sweat excessively”
- Old English · inherited from*forswǣtt
- Middle English · inherited fromforswat
- English todayforswat
From Middle English forswat, from Old English *forswǣtt, *forswǣted, past participle of Old English *forswǣtan (“to sweat excessively”), equivalent to for- + sweat.
Etymology from Wiktionary, CC BY-SA 4.0.