| cumbersome(adjective, easy, severe, harsh, big) |
| depressed(adjective, state, dull, quiet, flat) |
| difficult(adjective, dull, hard, tough, severe) |
| dreary(adjective, dull, bad, flat, warm) |
| grueling(adjective, hard, tough, severe, difficult) |
| impenetrable(adjective, set, hard, tough, solid) |
| labored(adjective, tough, severe, difficult, awkward) |
| lethargic(adjective, dull, quiet, weak, easy) |
| recondite(adjective, easy, severe, obscure, difficult) |
| rotund(adjective, solid, big, round, fat) |
| sorrowful(adjective, bad, sad, sorrow, depression) |
| substantial(adjective, give, strong, hard, great) |
| thickset(adjective, person, close, body, hard) |
| tubby(adjective, solid, round, fat, stout) |
| gross(adjective, informal, big, awful, terrible) |
| abundant(adjective, give, great, big, rich) |
| backbreaking(adjective, hard, difficult, harsh, cruel) |
| coarse(adjective, quality, rough, dirty, dry) |
| concentrated(adjective, set, strong, hard, tough) |
| despondent(adjective, state, gloomy, depressed) |