| hurdle(noun, trouble, difficulty, problem, hardship) |
| nicety(noun, trouble, difficulty, problem, hardship) |
| obstacle(noun, trouble, difficulty, problem, hardship) |
| pitfall(noun, trouble, difficulty, problem, hardship) |
| point(noun, trouble, difficulty, problem, hardship) |
| ponderosity(noun, trouble, difficulty, problem, hardship) |
| problem(noun, trouble, difficulty, hardship) |
| question(noun, trouble, difficulty, problem, hardship) |
| readblock(noun, trouble, difficulty, problem, hardship) |
| rigor(noun, trouble, difficulty, problem, hardship) |
| road-block(noun, trouble, difficulty, problem, hardship) |
| roadlock(noun, trouble, difficulty, problem, hardship) |
| robustness(noun, trouble, difficulty, problem, hardship) |
| rub(noun, trouble, difficulty, problem, hardship) |
| sophistication(noun, trouble, difficulty, problem, hardship) |
| struggle(noun, trouble, difficulty, problem, hardship) |
| sweat(noun, trouble, difficulty, problem, hardship) |
| task(noun, trouble, difficulty, problem, hardship) |
| topic(noun, trouble, difficulty, problem, hardship) |
| trash(noun, trouble, difficulty, problem, hardship) |