| obstacle(noun, check, difficulty, curb, restraint) |
| oppose(verb, block, delay, curb, prevent) |
| plug(noun, verb, stop, close, halt) |
| reduce speed(verb, expression, idiom, stop, check) |
| rein in(verb, expression, phrasal verb, reduce, restrain) |
| set back(verb, expression, phrasal verb, check, reduce) |
| take in sail(expression, idiom, slowness) |
| hindrance(noun, control, check, curb, limit) |
| accelerator |
| blockade(noun, verb, stop, control, close) |
| blow the whistle(expression, idiom) |
| bottleneck(noun, verb, hinder, hindrance) |
| bring up short(expression, idiom) |
| brush |
| bung(noun, verb, hinder, hindrance) |
| burden(noun, verb, hinder, hindrance) |
| chain(control, lead, limit, bridle, barrier) |
| constrain(verb, control, hinder, restraint) |
| cut off(verb, expression, phrasal verb, stop, close) |
| encumber(verb, check, delay, hinder, lessen) |