| crushing(adjective, severe, difficult, harsh, heavy) |
| discouraging(adjective, dull, dark, gloomy, miserable) |
| disheartening(adjective, dull, dark, gloomy, miserable) |
| dispiriting(adjective, dull, obscure, unhappy, dark) |
| distressful(adjective, painful) |
| dour(adjective, tough, severe, firm, harsh) |
| excruciating(adjective, painful) |
| exhausting(adjective, dull, hard, tough, difficult) |
| funereal(adjective, dull, obscure, harsh, unhappy) |
| grim(adjective, dull, tough, severe, firm) |
| grueling(adjective, painful) |
| hurtful(adjective, painful) |
| imperative(adjective, severity, arrogant, haughty, dominant) |
| imperial(adjective, severe, arrogant, haughty, dominant) |
| inflexible(adjective, severe, severity) |
| intolerable |
| overcast(adjective, dull, dark, gloomy, miserable) |
| overpowering(adjective, hot, humid) |
| overwhelming |
| racking |