Vouchsafe is a formal and old-fashioned word meaning "to give (something) to someone as a promise or a privilege."

// He vouchsafed the secret to only a few of his closest allies.

1. make strong or stronger

2. add nutrients to

3. add alcohol to (beverages)

4. enclose by or as if by walls around a stronghold

5. prepare oneself for a military confrontation

Something described as malleable is capable of being stretched or bent into different shapes, or capable of being easily changed or influenced.

// Let the cookie dough thaw until it becomes malleable enough to thinly roll.

// Students' minds are malleable and they need positive influences and guidance.

Hew is commonly used with to to mean "to conform to or adhere to (something)." Hew on its own has several meanings having to do with cutting or shaping with a sharp tool, such as an ax. Both hewed and hewn are past participles of hew. // The senator has always hewed closely to the party line.

// The explorers hewed logs for building cabins.

an ancient Mesopotamian temple tower consisting of a lofty pyramidal structure built in successive stages with outside staircases and a shrine at the top

Snark is an informal word that refers to an attitude or expression of mocking irreverence and sarcasm.

// The stand-up comedian’s set was full of snark about current events, which had the audience rolling in the aisles.

A cynosure is a person or thing that attracts a lot of attention or interest. As a proper noun, Cynosure may refer to the North Star or its constellation Ursa Minor.

// He was the cynosure of all eyes as he walked into the room.

Penchant refers to a strong liking for something, or a strong tendency to behave in a certain way. It is usually used with for.

// My penchant for mathematics helped me become an engineer.

Untoward is a formal word that describes something that is improper or inappropriate, or that is adverse or unfavorable.

// The medication is safe and effective, with no known untoward side effects.

// The investigation found that nothing untoward had happened at the event.

To elucidate something is to make it clear or easy to understand.

// The writer elucidates complex medical findings for a general audience.