| wearisome(adjective, dull, tough, severe, difficult) |
| annoying(adjective, dull, boring, painful, tedious) |
| exacting(adjective, dull, hard, tough, severe) |
| formidable(adjective, tough, severe, difficult, heavy) |
| harsh(adjective, difficult) |
| irritating(adjective, dull, tough, severe, boring) |
| tiring(adjective, dull, tough, difficult, awkward) |
| wearing(adjective, dull, difficult, awkward, boring) |
| cumbrous(adjective, pain, big, heavy, awkward) |
| vexatious(adjective, dull, boring, tired, tedious) |
| fatiguing(adjective, dull, difficult, awkward, boring) |
| gruelling |
| logged |
| rigorous(adjective, hard, severe, rough, difficult) |
| unwieldy(adjective, awkward, gravity, bulky) |
| uphill(adjective, tough, severe, difficult, awkward) |
| worrisome(adjective, hard, severe, upsetting, disturbing) |
| agonizing(adjective, painful, punishing) |
| back-breaking |
| crushing(adjective, painful, troublesome) |