A-heardian

According to the Old English Dictionary:

a-heardian

p. ode; pp. od; durare, perdurare, indurescere :-- On swá mycelre geþræstnesse and forhæfednesse módes and líchoman aheardode and awunode he hardened and continued in so great contrition and restraint of mind and body; in tanta mentis et corporis contritione duravit, Bd. 5, 12; S. 627, 28. AheardaÞ his gebod perdurat ejus imperium, R. Ben, 68. v. a-hyrdian; v. trans. a-heardian

Related words: intrans. To harden, grow hard, become inured to anything, to last, hold out, endure;