| exacting(adjective, characteristic, trouble, quality, difficulty) |
| exhausting(adjective, characteristic, trouble, quality, difficulty) |
| fair(adjective, characteristic, quality, impression, inferiority) |
| formidable(adjective, characteristic, trouble, quality, difficulty) |
| grueling(adjective, characteristic, trouble, quality, difficulty) |
| gruelling(adjective, characteristic, trouble, quality, difficulty) |
| hard(adjective, characteristic, trouble, quality, difficulty) |
| herculean(adjective, characteristic, trouble, quality, difficulty) |
| ignoble(adjective, characteristic, quality, impression, inferiority) |
| indifferent(adjective, characteristic, quality, impression, inferiority) |
| inferior(adjective, characteristic, quality, impression, inferiority) |
| insignificant(adjective, characteristic, quality, scale, unimportance) |
| intricate(adjective, characteristic, trouble, quality, difficulty) |
| involved(adjective, characteristic, trouble, quality, difficulty) |
| knotty(adjective, characteristic, trouble, quality, difficulty) |
| labored(adjective, characteristic, trouble, quality, difficulty) |
| laborious(adjective, characteristic, trouble, quality, difficulty) |
| measly(adjective, characteristic, quality, scale, unimportance) |
| medium(adjective, characteristic, quality, impression, inferiority) |
| meretricious(adjective, characteristic, quality, scale, unimportance) |