| wearying(adjective, dull, awkward, boring, tired) |
| grim(adjective, tough, severe, harsh, unhappy) |
| annoying(adjective, dull, rough, boring, painful) |
| cringeworthy |
| dicey(noun, adjective, risky, dangerous, unsafe) |
| drudgery |
| froward(adjective, support, attitude, troublesome) |
| gruelling |
| hard to please(expression, adjective, idiom, tough, critical) |
| irritating(adjective, dull, hard, tough, rough) |
| multiple |
| perilous(adjective, adverse, risky, dangerous, treacherous) |
| prickly(tough, harsh, awkward, burning, grumpy) |
| terrible(adjective, severe, tender, awful, awkward) |
| abstract(adjective, hard, obscure, complex, complicated) |
| awful(adjective, sickness, ache, anguishes) |
| bothersome(adjective, hard, tough, severe, rough) |
| choosy(adjective, demanding, scrupulous, particular, meticulous) |
| crabbed(difficulty, grumpy, bad-tempered, tetchy) |
| difficile(adjective, hard, tough, rough, heavy) |