| tiring(adjective, difficult, verb, dull, boring) |
| fatiguing(adjective, laborious, dull, difficult, boring) |
| arduous(adjective, dull, hard, tough, difficult) |
| difficult(adjective, dull, hard, tough, awkward) |
| stressful |
| hard(adjective, dull, tough, difficult, awkward) |
| wearing(adjective, dull, difficult, boring, tired) |
| unsurprising |
| wearying(adjective, dull, difficult, boring, tired) |
| strenuous(adjective, dull, hard, difficult, awkward) |
| draining(adjective, verb, difficult, tired, demanding) |
| laborious(adjective, dull, hard, difficult, awkward) |
| burdensome(adjective, dull, difficult, awkward, boring) |
| tough(adjective, dull, hard, difficult, boring) |
| enervating(adjective, annoying, verb, dull, difficult) |
| wearisome(adjective, dull, difficult, boring, tedious) |
| debilitating(adjective, verb, trying, tiresome, wearisome) |
| onerous(adjective, dull, hard, tough, difficult) |
| boring(adjective, dull, tedious, irritating, exasperating) |
| gruelling |