| rigorousness(difficulty, laboriousness, strenuousness) |
| rigour |
| scrape(noun, trouble, difficulty, confusion, pain) |
| severity |
| shame(noun, difficulty, confusion, mess, embarrassment) |
| snag(noun, trouble, difficulty, confusion, pain) |
| stew(noun, upset, trouble, bother, difficulty) |
| strain(noun, trouble, difficulty, pain, struggle) |
| strait(noun, trouble, difficulty, confusion, pain) |
| strenuousness(noun, trouble, difficulty, pain, struggle) |
| struggle(noun, trouble, disorder, difficulty, confusion) |
| stumbling block(noun, expression, trouble, difficulty, pain) |
| subnormality |
| tangle(noun, trouble, disorder, difficulty, confusion) |
| timidity(noun, difficulty, confusion, shame, mess) |
| trial(bother, disturbance, hindrance, untimeliness, troublesomeness) |
| tribulation(noun, trouble, difficulty, pain, struggle) |
| troublesomeness(noun, bother, disturbance, hindrance, risk) |
| uncertainty(difficulty, anxiety, nervousness, restlessness) |
| uncivility(noun, inelegance) |