ACCESORIO (A), accessory, incidental, extra
ACCIDENTADO (A), rough, uneven; troubled
ACCIDENTALMENTE, accidentally, unintentionally
ACCIDENTE, accident, chance; collision, accident
ACCIÓN, action, act; movement
ACELERACIÓN, acceleration
ACELERADO (A), rapid, quick, accelerated
ACELERADOR, accelerator, gas pedal
ACENTO, accent, stress, emphasis
ACENTUACIÓN, accentuation; emphasis, force
ACEPTABLE, acceptable, passable
ACEPTACIÓN, acceptance, approval; popularity
ACERBO, bitter, sour; harsh
ACETATO, acetate
ACETONA, acetone
ACIDEZ, acidity; sourness
ÁCIDO (A), acid, sharp, sour; acid (QUIM)
ACLAMACIÓN, acclamation, applause
ACOMODADIZO (A), accommodating, obliging; pliable
ACORDE, in accord/agreement with; compliance
ACOTACIÓN, marginal note
ACORDEÓN, accordion
ACRÓBATA, acrobat
ACROBÁTICO (A), acrobatic
ACTITUD, attitude, position, feeling, view
ACTIVIDAD, activity
ACTIVISTA, activist
ACTIVO (A), active, hardworking, lively, energetic
ACTO, act, action
ACTRIZ, actress
ACTUACIÓN; performance
ACTUALIDAD, nowadays; currently, presently
ACTUALIZACIÓN, updating
ACTUALMENTE (adv), currently, at present, presently
ACUÁRIUM, aquarium
ACUÁTICO (A), aquatic
ACUMULACIÓN, accumulation, accretion
ACUMULANDO, accumulating, increasing, adding
ACUMULATIVO (A), cumulative; progressive
ACUPUNTURA, acupuncture
ACUSACIÓN, charge, accusation, indictment
ACUSADO (A), accused; marked, pronounced
ACUSATORIO (A), accusatory, accusing
ACÚSTICA, acoustics
ACÚSTICO (A), acoustic
ADAGIO, adage, proverb; adagio (MUS)
ADAPTABILIDAD, adaptability, versatility
ADAPTACIÓN, adjustment, adaptation
ADHERENCIA, adherence
ADHERENTE, adhesive, sticky
ADHESIVO (A), adhesive, adherent
ADICCIÓN, addiction to drugs, food
ADICIÓN, addition (MAT); check
ADICIONAL, additional, extra
ADICTIVO (A), addictive, compulsive, obsessive
ADICTO (A), addict, abuser; enthusiast
ADITIVO, additive
ADJETIVO, adjective
ADMINISTRACIÓN, administration, management
ADMINISTRADOR (A), administrator, manager
ADMINISTRATIVO (A), administrative, managerial
ADMIRACIÓN, admiration
ADMIRADOR (A), admirer
ADMISIBLE, admissible, acceptable
ADMISIÓN, admission, acceptance
ADMONICIÓN, warning, reprimand, admonition
ADOLESCENCIA, adolescence
ADOLESCENTE (adj), adolescent
ADOPCIÓN, adoption, acceptance, assumption
ADORACIÓN, adoration, worship
ADORNO, adornment, ornament, ornamentation
ADQUISICIÓN, acquisition, purchase
ADRENALINA, adrenaline
ADULACIÓN, adulation, flattery
ADULTERACIÓN, adulteration
ADULTERIO, adultery
ADÚLTERO (A), adulterer, adulteress
ADULTO (A), adult, grown-up
ADVERBIO, adverb
ADVERSARIO (A), adversary, opponent
ADVERSIDAD, adversity, setback, mishap
ADVERSO (A), adverse
ADVERTENCIA, warning, word of advice
AERONÁUTICO (A), aeronautical
AEROPUERTO, airport
AFABLE, affable, genial
AFAMADO (A), famous, noted
AFECCIÓN (MED), complaint, disease
AFECTACIÓN, affectation
AFECTADO (A), affected, moved, touched; afflicted
AFECTO, affection, fondness
AFECTUOSO (A), affectionate, loving, attached
AFICIONADO (A), keen, enthusiastic, fan (DEP)
AFILIACIÓN, affiliation, membership
AFÍN, similar, related
AFINIDAD, affinity, similarity
AFIRMACIÓN, affirmation, assertion, confirmation
AFIRMATIVO (A), affirmative, positive
AFLAUTADO (A), high, fluty
AFLICCIÓN, suffering, sorrow, affliction
AFORTUNADAMENTE, fortunately, luckily
AFORTUNADO (A), lucky, fortunate
AGENCIA, agency, office, bureau
AGENTE, agent
ÁGIL, agile, quick, swift; dexterous; lively
AGILIDAD, agility, nimbleness
ÁGILMENTE, nimbly, quickly, swiftly
AGITACIÓN, shaking, stirring, bustle
AGITADO (A), choppy, rough, turbulent, bumpy, agitated
AGITADOR (A), political activist
AGNÓSTICO (A), agnostic
AGONÍA, death throes, dying moments
AGONÍAS (adj), moaner, whiner
AGONIZANTE, dying
AGORAFOBIA, agoraphobia
AGOSTO, August
AGRADABLE, pleasant, nice, agreeable
AGRAVAMIENTO, aggravation; worsening (MED)
AGRAVANTE, aggravating circumstance/ factor
AGRAVIO, offense, insult, grievance
AGRESIÓN,