"Teem" means swarm, or to be full of. For example, the evening air teemed with insects.

"Jeopardize" means to put in danger or imperil.

"Succumb" means to give in or to stop resisting something.

"Eradicate" means to eliminate or destroy something completely.

"Cooperate" means to help or assist somebody, or it means to agree to something or to participate in something.

"Abet" means to "aid," or to help. "Abet" typically means to help someone commit a crime.

"Halt" means to bring to a stop, or to end.

"Assess" means evaluate, determine or judge.

"Propose" means to put an idea forward, to suggest or to introduce something.

"Hinder" means to slow, make something difficult or prevent something.

"Inundate" means "overwhelm," drown or engulf.

"Writhe" means wiggle, contort or squirm.

"Swoop" means descend from the air, dive; it is typically used to describe the movement of a descending bird.

"Broil" means to cook under direct heat.

"Merge" means to join or bring together.

"Embroil" means to "involve" someone in a complicated situation; ensnare or entangle someone in a situation.

"Gild" means to put gold leaf on something; to embellish or decorate something.

"Wallow" means slosh around in. For example, to wallow in sorrow.

"Scorch" means to sear, or to burn.

"Cook under high heat" is an answer that is meant to mislead if you thought that "embroil" was a synonym of "broil."

The correct answer is "increase."

The term "augment" is defines as making (something) greater by adding to it; increase.

Therefore, "increase" is a synonym of "augment."

The verb "savor" means to enjoy something deeply and to take one's time enjoying. Additionally, "confine" means imprison, lock up; "recant" means take back something one has said; "detest" means hate, loathe; "entice" means tempt, allure, trick and then trap.

"Hackney" means to make something--such as a word, a phrase or an idea--stale, common, trite or clichéd by excessive use.

"Gyrate" means to circle, twirl or whirl.

"Pique" means to arouse a slight anger, to offend or provoke.

"Hoard" means to stockpile, to accumulate, to collect.

"Replenish" means to fill, refresh or restock something.

The correct answer is "gather."

"Muster," in this case, is a verb that means to gather, collect, assemble or bring together. 

This term can be used two ways -with an object or without. In the sentence above, it is used without an object (courage is not a tangible object). 

An example of using the term with an object would be the following -

The commander "mustered" up the candidates for the ceremony. The tangible object would be the candidates. 

The correct answer is "admire."

The word "revere" is a verb that means to feel deep respect and admiration for (something).

"Admire" is a synonym of "revere."

"Deviate" means to diverge from a path, to depart from a path, to veer away.

"Spread" means to open, to develop or to proliferate.

"Scrape" means to scratch something, to remove the outer layer or to rub something against a rough surface.

"Agree" means to be in unison, to allow or to assent.

"Reconcile" means to come to an agreement or make peace.