| tangled(adjective, characteristic, difficulty, hardship) |
| taxing(adjective, characteristic, burden, problem) |
| testing(adjective, characteristic, difficulty, hardship) |
| tiresome(adjective, characteristic, difficulty, hardship) |
| tiring(adjective, characteristic, difficulty, hardship) |
| titanic(adjective, characteristic, difficulty, hardship) |
| toilsome(adjective, characteristic, difficulty, hardship) |
| tricky(adjective, characteristic, difficulty, hardship) |
| unaccommodating(adjective, characteristic, difficulty, hardship) |
| unamenable(adjective, characteristic, difficulty, hardship) |
| unclear(adjective, characteristic, difficulty, hardship) |
| uncomfortable(adjective, characteristic, difficulty, complication) |
| unfathomable(adjective, characteristic, difficulty, hardship) |
| unintelligible(adjective, characteristic, difficulty, hardship) |
| unpleasant(adjective, characteristic, difficulty, complication) |
| untimely(adjective, characteristic, difficulty, complication) |
| unyielding(adjective, characteristic, difficulty, hardship) |
| uphill(adjective, characteristic, difficulty, hardship) |
| upstream(adjective, characteristic, difficulty, hardship) |
| vexing(adjective, characteristic, difficulty, hardship) |