boost, impetus, jolt, kickstart, dampener, succor, respite, tonic, nod, boon, breather, augurs, reprieve, lift, morale booster, credence, uplift, springboard, inroad, sops, spark, short shrift, facelift, revival, foothold, encouragement, bonanza, lifeline, oomph, reassurance, zing, stepping stone, catalyst, windfall, riposte, upturn, grist, spur, nudge, toehold, launchpad, omen, spice, fodder, glimmer, makeover, jumpstart, moolah, peps, prelude, setback, crowd puller, spanner, dimension, tailwind, cheer, accolade, assent, disincentive, underpinning, augury, incentive, glimpse, piquancy, shrift, vindication, hindrance, rejuvenation, razzmatazz, energiser, opportunity, foretaste, offing, reinvigoration, kudos, fructification, sustenance, insight, gainful, plaudit, overview, surprise, indication, frisson, blessing, hurray, support, counterbalance, blow, breakthrough, intimation, herald, upswing, masterstroke, walkover, catapult, launching pad, spadework, comedown, precursor, dent, pukka, spurt, flurry, advantage, repercussion, upsurge, boosts, diversion, wallop, corrective, downside, inducement

positive stimulus

bonus