Which word means 'to avenge'?
Rake
Reek
Wreak
Wreck

Wreak

Explanation:

As a verb, reek means to have a strong, offensive odor or to emit or give off (steam, smoke, fumes, etc.). The noun reek refers to a vapor or fume, or to a strong smell or stench. The verb wreak means to cause or bring about (harm or havoc) or to inflict (punishment or vengeance)

To wreck something means to completely destroy or ruin it.  He wrecked the garden. A coalition could have defeated the government and wrecked the treaty.His life has been wrecked by the tragedy...missed promotions, lost jobs, wrecked make.

Freebase. Rake. A rake, short for rakehell, is a historic term applied to a man who is habituated to immoral conduct, frequently a heartless womanizer. Often a rake was a prodigal who wasted his fortune on gambling, wine, women and song, incurring lavish debts in the process.

Wreak stems from the Old English wrecan, meaning "to avenge." Its current meaning, that of causing something to happen — usually with dire consequences — came about in the 19th century. The word is a transitive verb, often paired with the equally intense havoc, meaning "devastation.