Old English wyscan "to wish, cherish a desire," from Proto-Germanic *wunsk- (source also of Old Norse œskja, Danish ønske, Swedish önska, Middle Dutch wonscen, Dutch wensen, Old High German wunsken, German wunschen "to wish"), from PIE root *wen- (1) "to desire, strive for." Related: Wished; wishing. Wishing well as an enchanted water hole attested by 1819.