a priori: relating to or denoting reasoning or knowledge that proceeds from theoretical deduction rather than from observation or experience.
Aberration: a departure from what is normal, usual, or expected, typically one that is unwelcome; a person whose beliefs are unusual or unacceptable; a departure from one’s usual moral character or mental ability, typically for the worse. See further definitions concerning biology, optics, and astronomy, not listed here.
Abnegate: to renounce or reject (something desired or valuable)
Abort: 2. Bring to a premature end because of a problem or a fault.
Abstruse: difficult to understand; obscure.
Acrimony: bitterness or ill-feeling.

Affront: (v) offend the modest values of. (n) an action or remark that causes outrage or offense. WSM.

Ahistorical: lacking historical perspective or context.
Alacrity: brisk and cheerful readiness.
Ameliorate: make (something bad or unsatisfactory) better.
Amenity: 1. A desirable or useful feature or facility of a building or place. 2. The pleasantness of a place or person. WSM
Antipathy: a deep-seated feeling of dislike; aversion.
Apache: a violent street ruffian, originally in Paris.
Apotheosis: the highest point in the development of something; culmination or climax. The elevation of someone to divine status; deification.

Ardent: enthusiastic or passionate. WSM.

Arduous: involving or requiring strenuous effort; difficult and tiring.

Arraign: call or bring (someone) to court to answer a criminal charge. Find fault with (someone or something); censure.

Arrogate: take or claim (something) for oneself without justification.
Atavism: relating to or characterized by reversion to something ancient or ancestral.
Atemporal: existing or considered without relation to time.
Audacious: 1. Showing a willingness to take surprisingly bold risks; 2. Showing an impudent lack of respect.
1 August: respected and impressive.

Austere: severe or strict in manner, attitude, or appearance; (of living conditions or way of life) having no comforts or luxuries; harsh or ascetic; having an extremely plain and simple style or appearance; unadorned.