From Middle English winsom, winsum, wunsum, from Old English wynsum (“winsome, pleasant, joyful, merry”), from Proto-Germanic *wunisamaz (“joyful”), from Proto-Germanic *wunjō (“joy, delight, desire”), from Proto-Indo-European *wenh₁- (“to wish, love”), equivalent to winne + -some. Cognate with Scots winsome, wunsome (“charming, comely, pleasing”), Middle High German wunnesam (“winsome, joyful, delightful”), Old English wynn (“joy, rapture, pleasure, delight”), German Wonne (“bliss, delight, joy”). See also winne, winly.
- Charming, winning, engaging; inspiring trust and approval, especially if in an innocent manner.
- His bedside manner was especially winsome.