Eccentric usually describes people and things that deviate from conventional or accepted usage or behavior, especially in odd or whimsical ways.

It is also used technically to mean "deviating from a circular path" and "located elsewhere than at the geometric center."

// He's an endearingly eccentric scientist whose methods are quite inventive.

// The dwarf planet Pluto has an eccentric orbit.

A crucible, in the word’s literal use, is a pot in which metals or other substances are heated to a very high temperature or melted. But crucible is more often encountered in figurative use referring to a difficult test or challenge, or to a place or situation that forces people to change or make difficult decisions.

// The bronze was heated to 2,100 degrees in the crucible and then poured into molds designed by the artist.

// Her latest novel follows two best friends in a fantastical, battle-ravaged kingdom who

Radial describes things that are arranged or have parts arranged in straight lines coming out from the center of a circle.

// Her mosaics echo radial patterns observed in nature, from succulents to sea urchins.

Heyday refers to the period of one's greatest popularity, vigor, or prosperity. It is usually used in the singular.

// In its heyday, the circus was a major form of entertainment for the small town.

Peremptory is a formal word used especially in legal contexts to describe an order, command, etc., that requires immediate compliance with no opportunity to show why one should not comply. It is also used disapprovingly to describe someone with an arrogant attitude, or something indicative of such an attitude.

// The soldiers were given a peremptory order to abandon the mission.

// The company’s president tends to adopt a peremptory manner especially at the negotiating table.

If someone cannot abide someone or something bad, unpleasant, etc., they cannot tolerate or accept that person or thing. Abide can also mean "to accept without objection" and "to remain or continue."

// I just can't abide such blatant dishonesty.

// Residents agree to abide by the dorm's rules.

A bromide is a statement intended to make someone feel happier or calmer, but too dull and unoriginal to be effective.

// Their speech had nothing more to offer than the usual bromides about how everyone needs to work together.

Vamoose is an informal word that means "to depart quickly."

// With the sheriff hot on their tails, the bank robbers knew they had better vamoose.

Something described as conciliatory is intended to reduce hostility or to gain favor or goodwill.

// As the customer’s voice rose, the manager adopted a soothing, conciliatory tone and promised that the situation would be remedied.