fillip, catalyst, spark, motivation, credence, momentum, inspiration, springboard, spur, dimension, boost, encouragement, focal point, opportunity, grist, kickstart, oomph, justification, urgency, incentive, reason, rationale, jolt, reinvigoration, launching pad, dynamism, foothold, jumpstart, prelude, counterbalance, succor, groundwork, spearhead, precursor, underpinning, glimmer, insight, disincentive, pretext, invigoration, stepping stone, fodder, resonance, nudge, support, piquancy, short shrift, purpose, harbinger, indication, tailwind, luster, aim, avenue, excuse, inroad, impediment, launchpad, nod, prime mover, breather, outgrowth, reassurance, impression, zing, thrust, chance, silver lining, toehold, counterpoint, morale booster, dampener, bridgehead, respite, genesis, push, hint, boon, augurs, fulcrum, upshot, inkling, hope, imprimatur, surprise, backing, tonic, portent, vibrancy, focus, emphasis, leeway, traction, heft, sustenance, steam, solace, counterweight, touchstone, smokescreen, imperative, frisson, difficulty, inducement, elan, motivator, disadvantage, objection, challenge, commonality, determinant, dynamic, element, advantage, attraction, cue, meaning, accompanying, action, adverbial, agroecological, akan, alignment, allembracing, another, anticlinal, antiquated, archeological, articulate, aryan, assemblage, assumptive, atlantean, attributive, auroral

carry, launch, set in motion

drive, driving force, force, thrust

drift, impulse, impulsion