obstacle Synonyms

impediment hindrance complication hurdle snag difficulty barrier obstruction encumbrance deterrent roadblock constraint stumbling-block drawback problem restriction block blockage check limitation pitfall spane sprag resistance stop obviation obstructer shield preclusion restraint remora puzzle hazard retardment preventive prevention rub setback stoppage stricture bottleneck hiccup glitch infarct minefield disincentive fly in the ointment hurdles barriers impediments