| troublesome(adjective, tough, severe, rough, difficult) |
| trying(adjective, dull, tough, severe, difficult) |
| burdensome(adjective, dull, tough, severe, difficult) |
| wearing(adjective, difficult, dull, boring, tedious) |
| annoying(adjective, dull, rough, pain, boring) |
| arid(adjective, dull, stupid, boring, routine) |
| exhausting(adjective, dull, difficult, boring, tedious) |
| flat(adjective, dull, weak, stupid, boring) |
| ho-hum(adjective, dull, boring, tedious, dreary) |
| prosaic(adjective, dull, weak, stupid, ordinary) |
| soporific(adjective, weariness) |
| weary(adjective, excite, fatigue) |
| arduous(adjective, dull, tough, severe, difficult) |
| bothersome(adjective, tough, severe, difficult, awkward) |
| onerous(adjective, dull, tough, severe, difficult) |
| unexciting(adjective, dull, weak, stupid, boring) |
| commonplace(adjective, dull, stupid, ordinary, familiar) |
| dead(adjective, dull, flat, stupid, tedious) |
| deadening |
| difficult(adjective, dull, hard, tough, rough) |