| toilsome(adjective, hard, rough, difficult, heavy) |
| severe(adjective, hard, tough, rough, difficult) |
| tedious(adjective, dull, boring, monotonous, irritating) |
| tiresome(adjective, dull, hard, severe, harsh) |
| dull(adjective, boring, tedious, irritating, exasperating) |
| enfeebling(adjective, verb) |
| dissipating(verb, consuming, losing, enervating) |
| emptying(noun, verb, enervating) |
| punishing(adjective, hard, difficult, demanding, strenuous) |
| sapping(verb, adjective, difficult, unpleasant, grim) |
| taxing(adjective, hard, severe, difficult, heavy) |
| depleting(verb, adjective, harmful, damaging, trying) |
| back-breaking |
| evacuating(verb, rejecting) |
| monotonous(adjective, dull, boring, tedious, irritating) |
| soporific |
| uninteresting(adjective, dull, boring, tedious, irritating) |
| challenging(adjective, hard, tough, difficult, awkward) |
| consuming(verb, consuming) |
| demanding(adjective, dull, hard, tough, difficult) |