| complicated(adjective, state, condition, situation) |
| disturbing(adjective, state, condition, situation) |
| grievous(adjective, state, condition, situation) |
| gruelling(adjective, nervous, stress, tense, stressful) |
| knotty(adjective, state, condition, situation) |
| nerve-wracking(adjective, state, condition, situation) |
| oppressive(adjective, state, feature, characteristic, condition) |
| painful(adjective, state, feature, characteristic, condition) |
| perplexed(adjective, state, condition, situation) |
| rough(adjective, state, condition, situation) |
| severe(adjective, state, feature, characteristic, condition) |
| tensive(adjective, state, condition, situation) |
| toilsome(adjective, state, feature, characteristic, condition) |
| tough(adjective, state, condition, situation) |
| weighty(adjective, state, feature, characteristic, condition) |
| complex(adjective, state, condition, situation) |
| distressing(adjective, state, feature, characteristic, condition) |
| hard(adjective, state, condition, situation) |
| nerve-racking(adjective, state, feature, characteristic, condition) |