| danger(noun, difficulty, hardship, misfortune, rigor) |
| dense(adjective, difficult, complex, intricate, thorny) |
| difficult situation(noun, expression, trouble, difficulty, mess) |
| dispute(noun, trouble, difficulty, issue, question) |
| doubt(noun, trouble, dispute, difficulty, issue) |
| drawback(noun, difficulty, hindrance, hitch, setback) |
| end result(expression, effect, result, outcome) |
| entanglement(noun, trouble, difficulty, mess) |
| facer |
| fix |
| foul-up |
| full of twists and turns(expression, adjective, idiom, difficult, complex) |
| glitch(noun, difficulty, hindrance, hitch, setback) |
| harsh conditions(expression, difficulty, hardship, misfortune) |
| hi tech(expression, adjective, daedal, gordian) |
| high-tech(adjective, difficult, complex, sophisticated, involved) |
| high tech(expression, adjective, difficult, elaborate, daedal) |
| hindrance(noun, difficulty, hitch, setback) |
| hitch(noun, trouble, dispute, difficulty, issue) |
| hornet's nest |