Mis-wrítan

According to the Old English Dictionary:

mis-wrítan

to write incorrectly, make a mistake in writing :-- Barbarismus, ðæt is ánes wordes gewæmmednyss, gif hit biþ miswriten, Ælfc. Gr. 50, 21; Som. 51, 48. On manegum wísum miswritene, 50, 23; Som. 51, 54. mis-writan