Synonyms

Retaliation means the act of returning an injury or wrong with a similar injury or wrong - essentially revenge or payback. Revenge is the direct synonym. The other options don't match: reprimand is a formal rebuke, request is asking for something, roaming means wandering, and regret is feeling remorse.

Mediocre means average, ordinary, or of moderate quality - neither very good nor very bad. Common is the closest synonym as it also means ordinary or frequently found. The other options don't match: gloomy means dark/depressing, engage means to occupy or attract, memento is a keepsake, and adage is a proverb.

Meddle means to interfere in matters that are not one's concern - to intrude or become involved where unwanted. Interfere is the direct synonym. The other options don't match: invalid means not valid, pasture is grazing land, spare means extra or to refrain from using, and essential means necessary.

Bicker means to argue about petty or trivial matters - to quarrel over small things. Altercate is a formal synonym meaning to dispute or argue angrily. The other options don't match: pain is suffering, vitalize means to give life, rifled means ransacked, and arouse means to awaken or provoke.

Arduous means difficult, taxing, or requiring much effort and hard work. Laborious is the correct synonym as it also means involving much hard work and effort. The other options don't match: fervent means passionate/earnest, esteem means respect, grant means to give or allow.

Amity means friendship, friendly relations, or peaceful harmony between people or nations. Friendly is the correct adjective form here. The other options don't match: explain means to make clear, activate means to start or make active, crossing means going across.

Stubborn means refusing to change one's mind or course of action - obstinate or headstrong. Obstinate is the direct synonym. The other options don't match: occlude means to block, oblivion means forgetfulness/oblivious state, ostensible means apparent or claimed.

Contort means to twist, bend, or distort out of the normal shape - literally or figuratively. Twist is the direct synonym. The other options don't match: tweak means to make small adjustments, timber is wood, teak is a type of wood.

Abdicate means to formally give up a throne, right, power, or responsibility - to renounce or relinquish a position. Renounce is the correct synonym in this context. The other options don't match: revert means to return to a previous state, rove means to wander, rise means to move upward.

Agile means able to move quickly and easily. Fleet means swift or fast-moving, making it the correct synonym. Foster means to nurture, frown is a facial expression, and frond is a leaf-like structure.

Dexterous means skillful, especially with the hands. Adept means very skilled or proficient, making it the correct synonym. Agony means extreme pain, avert means to turn away, and advance means to move forward.

Embellish means to decorate or make more attractive by adding details. Adorn means to decorate or add beauty to something, making it the correct synonym. Adore means to love deeply, adjust means to modify, and acclaim means to praise enthusiastically.

Succor means assistance or help in times of difficulty. Assistance is the closest match in meaning, though it's a noun while succored is the past tense verb form. The sentence uses succor as help given to someone in need.

Polyglot means having many languages.

Dexterity means skill, especially in using the hands or body. Skill is the direct synonym, meaning the ability to do something well. Efficiency means doing things without waste, zest means enthusiasm, and tempo means speed or pace.