obstacle, stumbling block, roadblock, impediment, challenge, barrier, pitfall, hindrance, setback, milestone, bottleneck, drawback, problem, difficulties, constraint, conundrum, factor, quandary, bugbear, snags, hump, dilemma, prerequisite, accomplishment, headwind, bugaboo, headache, shortcoming, issue, stepping stone, rough sledding, step, disappointment, hiccups, disadvantage, rubicon, complication, requirement, task, litmus test, component, minefield, hitches, upsides, banana skin, threshold, determiner, misconception, thing, gauntlet, logjam, misstep, question, steppingstone, cusp, downsides, element, tightrope, crossroad, ambiguities, sticky wicket, chore, nemesis, hurdlers, objections, letdown, breaker, chance, vaulter, danger, ramifications, strides, tangle, thorn, aspect, boon, possibility, complexities, doubts, mistake, overhang, puzzle, implications, determinant, contender, uncertainty, hot potato, headway, threat, underbrush, limbo, shocker, bogy, gainer, competitor, chink, priority, leap, teething troubles, hassle, concern, blow, hurdles, obstacles, handicap, difficulty, impediments, roadblocks, downside, challenges, flaw, snag, chariot, ski, sled, atlantean, canoe, cognate, country, countywide, distance, dogsled, flip, gubernatorial, headlong, home, instrument, isokinetic, mayoral, mile, money, month

welterweight

jump, jumping, obstruction, overleap, vault