On-hǽtan

According to the Old English Dictionary:

on-hǽtan

II. add :-- Þá mǽdenn onǽldon and onhǽtton þǽra geongrena mód tó forcyrrednesse heora synlustes puellae discipulorum mentes ad perversitatem libidinis inflammabant, Gr. D. 119, 14. Cf. in-hǽtan. on-hætan