Mægen-þyse

According to the Old English Dictionary:

an;

mægen-þyse

f. Violence, force:--Sóna ðæt onfindeþ se ðe mec féhþ ongeán and wið mægenþisan mínre genǽsteþ ðæt hé hrycge sceal hrusan sécan soon doth he find that fights against me, and with my force comes into conflict, that with his back he must visit the earth, Exon. 107 b; Th. 410, 2; Rä. 28, 10. [Cf. Icel. þysja to rush.] mægen-þyse