impediment, hinderance, obstacle, stumbling block, drawback, constraint, hamper, distraction, factor, roadblock, prerequisite, bane, hurdle, bugbear, disincentive, stepping stone, boon, detriment, encumbrance, irritant, panacea, determinant, constraining, determent, repercussion, problem, disadvantage, shortcoming, detraction, motivator, undoing, steppingstone, hassle, reason, pitfall, obstructions, bottleneck, dampener, qualm, saving grace, retarding, determiner, enabler, hitches, necessity, annoyance, concern, botheration, excuse, headache, catalyst, godsend, inactiveness, downsides, focal point, difficulties, limitation, complication, achilles heel, inaccessibility, crowd puller, imponderable, sine qua non, justification, worry, motivation, thorn, gainful, barriers, hamstringing, chore, inconvenience, precondition, crutch, misgiving, aspect, millstone, fillip, challenge, expedient, fetter, drag, disguise, spoilsport, facet, without, litmus test, yardstick, constricting, manifestation, restriction, deterrent, lack, consequence, laxity, preoccupation, overstretching, pipedream, anathema, culprit, predictor, embarrassment, handicap, hindrances, difficulty, obstacles, impediments, danger, hazard, advantage, downside, inducement

albatross, antagonism, bar, bind, clog, complicating, complication, deterrence, foiling, frustrating, frustration, millstone, obstacle, obstruction, prevention, speed bump, thwarting

clog, drawback, hinder, impede, interfere, speed bump, unobstructed

act, difficulty, human action, human activity, impediment, impedimenta, obstruction

deterrent, encumbrance, handicap, hitch, impediment, incumbrance, interference, interfering, preventative, preventive