Synonyms to upper hand

ace in the hole, advantage, backlog, bulge, cache, coign of vantage, drop, edge, flying start, head start, inside track, jump, nest egg, odds, reserve, reserve fund, reserve supply, reserves, reservoir, resource, running start, savings, sinking fund, something extra, something in reserve, start, stockpile, unexpended balance, vantage, vantage ground, vantage point, whip hand, accommodation, account, advance, advancement, advantageously, advantageousness, advisability, allowance, amenity, answer, appliance, applicability, appropriateness, appurtenance, ascendancy, asset, avail, be handy, be of use, be right, befit, befitting, behalf, behoof, benediction, beneficialness, benefit, benison, bestead, better, betterment, blessing, boon, boost, break no bones, conduce to, contribute to, convenience, deadwood, decency, desirability, do, do good, do no harm, do the trick, dominance, domination, draw, encourage, enhancement, expedience, expediency, expedite, facilitate, facility, favor, feasibility, fill the bill, fit, fitness, fittingness, foo