Fǽr-wundor

According to the Old English Dictionary:

fǽr-wundor

gen. -wundres; n. A sudden or stupendous wonder; inŏpīnātum et stŭpendum mīrācŭlum :-- Gé onlóciaþ fǽrwundra sum ye behold a stupendous wonder, Cd. 157; Th. 195, 20; Exod. 279. fær-wundor