| critical(hard, tough, difficult, negative, disapproving) |
| delicate(hard, complex, awkward, uneasy, tricky) |
| dismal(adjective, dull, awful, gloomy, miserable) |
| elaborate(adjective, hard, fancy, difficult, complex) |
| exacting(adjective, hard, tough, severe, difficult) |
| fickle(adjective, unreliable, insecure, treacherous, incalculable) |
| fussy(adjective, difficult) |
| grating(adjective, aggravating) |
| grinding(adjective, rough, difficult, harsh, heavy) |
| harsh(adjective, hard, severe, difficult, heavy) |
| herculean(adjective, tough, severe, rough, difficult) |
| inflaming(adjective, painful, aggravating) |
| inopportune(adjective, appropriate, unpleasant, negative, awkward) |
| mischievous(adjective, wicked, pushy, devilish, meddling) |
| odious(adjective, unpleasant, horrible, painful, disagreeable) |
| opposing(adjective, adverse) |
| pestering(adjective, aggravating) |
| pestilential(adjective, harmful, bothersome, worrisome) |
| plaguing |
| plaguy(adjective, pain, vexatious) |