N. cause, origin, source, principle, element, occasioner, prime mover, primum mobile, vera causa, author, mainspring, agent, leaven, groundwork, foundation, spring, fountain, well, font, fountainhead, spring head, wellhead, fons et origo, genesis, descent, remote cause, influence, pivot, hinge, turning point, lever, crux, fulcrum, key, proximate cause, causa causans, straw that breaks the camel's back, ground, reason, reason why, why and wherefore, rationale, occasion, derivation, final cause, les dessous des cartes, undercurrents, rudiment, egg, germ, embryo, bud, root, radix radical, etymon, nucleus, seed, stem, stock, stirps, trunk, tap-root, gemmule, radicle, semen, sperm, nest, cradle, nursery, womb, nidus, birthplace, hotbed, causality, causation, origination, production

V. be the cause of, originate, give origin to, give rise, to, give occasion to, cause, occasion, sow the seeds of, kindle, suscitate, bring on, bring to bring pass, bring about, produce, create, set up, set afloat, set on foot, found, broach, institute, lay the foundation of, lie at the root of, procure, induce, draw down, open the door to, superinduce, evoke, entail, operate, elicit, provoke, conduce to, contribute, have a hand in the pie, have a finger in the pie, determine, decide, turn the scale, have a common origin, derive its origin

Adj. caused, causal, original, primary, primitive, primordial, aboriginal, protogenal, radical, embryonic, embryotic, in embryo, in ovo, seminal, germinal, at the bottom of, connate, having a common origin

Adv. because, behind the scenes

Phr. causa latet vis est notissima, felix qui potuit rerum cognoscere causas

N. motive, springs of action, wellsprings of action, reason, ground, call, principle, by end, by purpose, mainspring, primum mobile, keystone, the why and the wherefore, pro and con, reason why, secret motive, arriere pensee, intention, inducement, consideration, attraction, loadstone, magnet, magnetism, magnetic force, allectation|, allective|, temptation, enticement, agacerie, allurement, witchery, bewitchment, bewitchery, charm, spell, fascination, blandishment, cajolery, seduction, seducement, honeyed words, voice of the tempter, song of the sirens forbidden fruit, golden apple, persuasibility, persuasibleness, attractability, impressibility, susceptibility, softness, persuasiveness, attractiveness, tantalization, influence, prompting, dictate, instance, impulse, impulsion, incitement, incitation, press, instigation, provocation, inspiration, persuasion, suasion, encouragement, advocacy, exhortation, advice, solicitation, lobbyism, pull*, incentive, stimulus, spur, fillip, whip, goad, ankus, rowel, provocative, whet, dram, bribe, lure, decoy, decoy duck, bait, trail of a red herring, bribery and corruption, sop, sop for cerberus, prompter, tempter, seducer, seductor, instigator, firebrand, incendiary, siren, circe, agent provocateur, lobbyist

V. induce, move, draw, draw on, bring in its train, give an impulse, to, inspire, put up to, prompt, call up, attract, beckon, stimulate, spirit up, inspirit, rouse, arouse, animate, incite, foment, provoke, instigate, set on, actuate, act upon, work upon, operate upon, encourage, pat on the back, pat on the shoulder, clap on the back, clap on the shoulder, influence, weigh with, bias, sway, incline, dispose, predispose, turn the scale, inoculate, lead by the nose, have influence with, have influence over, have influence upon, exercise influence with, exercise influence over, exercise influence upon, go round, come round one, turn the head, magnetize, lobby, persuade, prevail with, prevail upon, overcome, carry, bring round to one's senses, bring to one's senses, draw over, win over, gain over, come over, talk over, procure, enlist, engage, invite, court, tempt, seduce, overpersuade, entice, allure, captivate, fascinate, bewitch, carry away, charm, conciliate, wheedle, coax, lure, inveigle, tantalize, cajole, tamper with, bribe, suborn, grease the palm, bait with a silver hook, gild the pill, make things pleasant, put a sop into the pan, throw a sop to, bait the hook, enforce, force, impel, propel, whip, lash, goad, spur, prick, urge, egg on, hound, hurry on, drag, exhort, advise, call upon &c. press, advocate, set an example, set the fashion, keep in countenance, be persuaded &c, yield to temptation, come round, concede, obey a call, follow advice, follow the bent, follow the dictates of, act on principle

Adj. impulsive, motive, suasive, suasory, persuasive, persuasory, hortative, hortatory, protreptical|, inviting, tempting, &c. v, suasive, suasory, seductive, attractive, fascinating, provocative, induced, disposed, persuadable, spellbound, instinct with, smitten with, infatuated, inspired, by

Adv. because, therefore, from this motive, from that motive, for this reason, for that reason, for, by reason of, for the sake of, count of, out of, from, as, forasmuch as, for all the world, on principle

Phr. fax mentis incendium gloriae, "temptation hath a music for all ears" "to beguile many and be beguiled by one"