1 "And were there rightful cause of difference, 2 Yet were not better, fair it to accord,

were > [were it] accord > reconcile

3 Than with blood-guiltiness to heap offence,

blood-guiltiness > responsibility for bloodshed offence > hurt, harm, damage; injury

4 And mortal vengeance join to crime abhorred? 5 O fly from wrath, fly, O my liefest lord:

liefest > dearest

6 Sad be the sights and bitter fruits of war, 7 And thousand furies wait on wrathful sword;

furies > (Or Furies, traditionally (in later accounts) the three goddesses who guard the gates of hell; in earlier accounts, they are avenging deities, of indeterminate number, sent from hell to punish wrongdoers) wait on > [attend the]

8 Ne aught the praise of prowess more does mar,

Ne aught > Naught; and naught praise > praiseworthiness prowess > valour