| objectionable(noun, adjective, disagreeable, lousy, unwelcome) |
| obnoxious(noun, adjective, disagreeable, lousy, unwelcome) |
| obstacle(noun, difficulty, arrest, obstruction, impediment) |
| obstruction(noun, trouble, concern, strain, difficulty) |
| onus(noun, trouble, concern, strain, responsibility) |
| punishment(noun, trouble, concern, strain, weight) |
| qualification(noun, control, check, limit, condition) |
| regulation(noun, control, check, limit, condition) |
| rejected(noun, adjective, disagreeable, lousy, unwelcome) |
| repellent(noun, adjective, unpleasant, disagreeable, lousy) |
| reservation(noun, control, check, limit, condition) |
| responsibility(noun, trouble, concern, strain, weight) |
| restraint(noun, control, check, difficulty, limit) |
| restriction(noun, control, difficulty, limit, restraint) |
| rule(noun, control, check, limit, condition) |
| shut out(noun, expression, adjective, disagreeable, lousy) |
| small difficulty(noun, expression, control, check, limit) |
| snag(noun, difficulty, arrest, obstacle, obstruction) |
| sorrow(noun, trouble, concern, strain, weight) |
| stint(noun, control, check, limit, condition) |