- abandon: Lack of constraint or inhibition
- abate: To decrease in; to reduce
- abet: To assist, to act as an accomplice
- abjure: To renounce under oath; to abandon
- abnegate: To deny; to give up
- abortive: Ending without any specific results
- abrogate: To abolish by authoritative means
- abscond: To depart quickly in secret
- abstemious: Done in moderation; consuming sparingly
- accede: To authorize; to express permission or approval
- acclivity: An ascending slope or incline
- accretion: A growth in size or amount
- acme: The highest level or degree possible
- actuate: To activate; to put into motion; to influence to activity
- acuity: Sharp vision or perception distinguished by the ability to see subtle details
- acumen: Sharpness of insight, understanding, and mind; shrewd
- adamant: Inflexible; unyielding
- adept: Exceptionally skilled
- adjudicate: To act as a judge; to settle an issue
- adjure: To appeal to
- admonish: To warn or caution; to advise
- adroit: Accomplished; highly competent; very skilled
- adulation: Excessive flattery or admiration, usually insincere
- adumbrate: To give an indication or hint about events in the near future
- aerie: A nest built very high in the air; an elevated, isolated dwelling
- affected: Phony; artificial
- aggregate: The total; the sum
- algorithm: An established method for solving a problem/equation
- alimentary: Relating to food, nutrition, or digestion
- allay: To ease, lessen, decrease in intensity
- amity: Friendship, good intention
- amorphous: Lacking a definite form
- animus: A feeling of ill will
- anodyne: A source of comfort; a pain-relief medicine
- anomaly: Something that is hard to classify; abnormal compared to the common
- anthropomorphic: Giving human qualities or characteristics for inanimate objects or animals
- antiquated: Too aged to be fashionable or useful in any way
- aphorism: A statement of a principle
- aplomb: Self-assurance; poise
- apostate: One who renounces or defies a religious faith
- apposite: Extremely well-adapted or appropriate
- apprise: To notify; inform
- appropriate: To assign for a particular job or purpose; allocate
- arable: Fertile; suitable for agriculture
- arcane: Little-known; secret; obscure; elusive
- archipelago: A large chain or group of islands
- arrears: Overdue or unpaid debts/bills; a forgotten, neglected promise
- arrogate: To claim without any authorization or justification; without right
- askance: With disapproval; with a such sideway's glance
- assent: To agree, usually for a proposal
- atavistic: A characteristic of a previous time or era; ancient, past
- autocrat: A dictator
- aver: To declare as true
- avuncular: Regarded as the characteristics of an uncle; kind and warm
- awry: Wrong; askew
Kaplan SAT Word List: "A" words