| complaint(noun, trouble, disorder, defeat, distress) |
| complexity(noun, complication, multiplicity, complicacy) |
| confusion(noun, difficulty, anxiety, issue, doubt) |
| consideration(noun, study, concern, point, issue) |
| contention(noun, concern, point, difficulty, issue) |
| defect(noun, trouble, difficulty, weakness, bar) |
| delinquent(adjective, problematic) |
| dispute(noun, trouble, bother, difficulty, issue) |
| drag(noun, trouble, bother, strain, difficulty) |
| embarrassment(noun, difficulty, question, mess, puzzle) |
| fuss(noun, trouble, difficulty) |
| head(noun, point, line, issue, idea) |
| imperfection(noun, trouble, difficulty, weakness, bar) |
| indisposition(illness, sickness) |
| interrogative |
| intractable(adjective, tough, problematic, trying) |
| involvement(noun, complication, multiplicity, complicacy) |
| line(noun, point, idea, subject, topic) |
| lookout(noun, trouble, worry, difficulty, interest) |
| matter in hand(expression, idiom, point, line, issue) |