| complex(adjective, characteristic, difficulty, hardship) |
| complicated(adjective, characteristic, difficulty, hardship) |
| compromising(adjective, characteristic, difficulty, complication) |
| confounding(adjective, characteristic, difficulty, hardship) |
| confusing(adjective, characteristic, difficulty, hardship) |
| crucial(adjective, characteristic, difficulty, hardship) |
| crushing(adjective, characteristic, burden, problem) |
| deal breaker(noun, challenge, case, matter, knot) |
| deep(adjective, characteristic, difficulty, hardship) |
| difficile(adjective, characteristic, difficulty, hardship) |
| disturbing(adjective, characteristic, burden, problem) |
| effortful(adjective, characteristic, difficulty, hardship) |
| elaborate(adjective, characteristic, difficulty, complication) |
| embarrassed(adjective, characteristic, difficulty, complication) |
| energetic(adjective, characteristic, difficulty, complication) |
| enigmatic(adjective, characteristic, difficulty, hardship) |
| enigmatical(adjective, characteristic, difficulty, hardship) |
| entangled(adjective, characteristic, difficulty, hardship) |
| esoteric(adjective, characteristic, difficulty, hardship) |
| fastidious(adjective, characteristic, difficulty, hardship) |