bewreak means to avenge; revenge. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “bewreak” is a great word
BEWREAK — [Verb] To avenge or give vent to incensed feelings through action. From Middle English bewreken ('to take revenge, avenge'), equivalent to the intensive prefix be- + wreak ('to inflict, avenge'). Compare Old English bewrecan ('to drive away, exile, banish'). First attested around 1325. Unlike "avenge," which often seeks a moral balance, or "retaliate," which implies a swift, transactional reprisal, to bewreak is to enact the dark, deliberate flowering of a personal grievance. It is the hand that methodically salts a rival's fields, the cold deposition of secrets after years of resentment, or the heavy, deliberate crack of a walking stick on a debtor's ledger—the moment when a long-nursed anger ceases to be a feeling and becomes a fact.
Etymology
From Middle English bewreken (“to take revenge, avenge”), equivalent to be- + wreak. Compare Old English bewrecan (“to drive away, exile, banish”). Compare awreak.
verb
- To avenge; revenge.“Gemoted warriours to bewrecke her bedde”
- To give vent in action to (incensed feelings).“The Londoners seeing that they could get no vantage against the duke, who was without their reach, to bewreak their anger they took his arms, which in most despiteful wise they hanged up in the open places of the city in sign of reproach, as for a traitor; […]”