Letter: a
- active use, appliance, application, consumption, employ, employment, exercise, exertion, ill-use, misuse, usage

- active voice, active, middle, passive, reflexive, voice

- active, acting, active voice, activist, acute, aggressive, agile, alert, alive, animated, assiduous, at work, bouncing, bouncy, breezy, brisk

- actively, all out, allegro, down, earnestly, energetically, for real, forcefully, full tilt, hard, heartily, in full swing, intensely, keenly, lively, lustily

- activeness, action, activism, business, doings, militancy, motion, movement, proceedings, stir

- activism, act, acting, action, activeness, activity, behaviour, business, doing, doings, employment, exercise, function, functioning, goings-on, militancy

- activist, ball of fire, beaver, big-time operator, busy bee, doer, eager beaver, enthusiast, go-getter, human dynamo, hustler, live wire, man of action, man of deeds, militant, new broom

- activities, activity, affair, affairs, bag, commerce, concern, employ, employment, enterprise, function, interest, labour, lookout, matter, occupation

- activity, act, acting, action, actions, activism, activities, acts, actuation, address, affair, affairs, affectation, air, animation, ardour

- actor, Artful Dodger, Casanova, Don Juan, Machiavellian, Thespian, actress, affecter, agent, antagonist, anti-hero, architect, author, bad guy, barnstormer, beguiler

- actor-proof, Thespian, balletic, dramatic, film, ham, hammy, histrionic, legitimate, melodramatic, operatic, overacted, overplayed, scenic, spectacular, stagy

- actress, Thespian, actor, antagonist, bad guy, barnstormer, character, character actor, character man, character woman, child actor, dramatizer, feeder, foil, heavy, juvenile

- acts, act, action, activity, address, affectation, air, bearing, carriage, comportment, conduct, custom, demeanour, deportment, doing, doings

- actual fact, axiom, case, circumstance, datum, fact, matter of fact, postulate

- actual presence, availability, existence, immanence, immediacy, occurrence

- actual thing, carbon copy, copy, dead ringer, ditto, double, duplicate, equivalent, facsimile, homonym, replica, same, selfsame, spitting image, synonym, twin

- actual, absolute, admitting no question, as is, ascertained, attested, authentic, authenticated, being, categorically true, certain, certified, commonplace, concrete, confirmed, contemporaneous

- actuality, accomplished fact, achievement, actualization, attainment, authenticity, basis, being, embodiment, essence, eternal verities, fact, factuality, fait accompli, good sooth, grim reality

- actualization, actuality, embodiment, extrapolation, fruition, projection, realization

- actualize, achieve, develop, effect, embody, implement, objectify, project, realize

- actually, absolutely, assuredly, certainly, clearly, de facto, decidedly, demonstrably, factually, for a certainty, for real, forsooth, genuinely, historically, in actuality, in all conscience

- actuarial calculation, break, destiny, fate, fortuity, fortune, gamble, good luck, hap, law of averages, lot, luck, opportunity, probability, random sample, risk

- actuarial prediction, apocalypse, foreboding, forecast, forecasting, foresight, guesswork, omen, prefiguration, presage, presentiment, probability, prognosis, promise, prophecy, prospectus

- actuary, CPA, accident insurance, accountant, accountant general, annuity, assurance, auditor, aviation insurance, bail bond, bank accountant, bank examiner, bond, bookkeeper, business life insurance, calculator

- actuate, animate, arouse, circulate, compel, drive, drive on, energize, excite, force, forward, foster, galvanize, give an impetus, give momentum, goad

- actuated, animated, inclined, minded, motivated, moved, stimulated

- actuating, compelling, directive, driving, impelling, impulsive, motivational, motive, moving, pressing, urgent

- actuation, activity, animation, direction, dynamics, going, influence, inner-direction, kinematics, kinetics, mobilization, motion, motivation, move, movement, moving

- actuator, abettor, component, energizer, gadfly, generator, inspirer, mover, moving spirit, pleader, prime mover, prompter, spark, spark plug, tempter

- acuity, acridity, acumen, acuteness, adroitness, agility, alertness, aptitude, aptness, astuteness, attention, attentiveness, braininess, brightness, brilliance, clear thinking
