| awkward(adjective, tough, difficult, demanding, tricky) |
| grueling(adjective, tough, difficult, awkward, grim) |
| importunate |
| infuriating(adjective, aggravating) |
| offensive(adjective, severe, unpleasant, awful, terrible) |
| severe(adjective, hard, tough, difficult, awful) |
| thorny(adjective, tough, difficult, tricky, problematic) |
| arduous(adjective, hard, tough, severe, difficult) |
| besetting(adjective, painful) |
| boring(adjective, irritating, annoying) |
| crushing(adjective, painful) |
| demanding(adjective, hard, tough, severe, difficult) |
| disgusting(adjective, offensive, unpleasant, disagreeable, distasteful) |
| disquieting(adjective, bad, hard, severe, offensive) |
| distressful(adjective, painful) |
| enraging(adjective, aggravating) |
| frustrating |
| fussy(adjective, hard, tough, difficult, problematic) |
| grating(adjective, aggravating) |
| inflaming(adjective, painful, aggravating) |