| harsh(adjective, mean, strong, hard, great) |
| hard(adjective, mean, strong, tough, easy) |
| serious(adjective, calm, help, bad, strong) |
| tough(adjective, clear, bad, strong, hard) |
| cruel(adjective, appearance, mean, strong, hard) |
| grave(adjective, calm, quiet, help, hard) |
| oppressive(adjective, hard, tough, rough, firm) |
| grievous(adjective, help, hard, tough, difficult) |
| strict(adjective, characteristic, strong, hard, tough) |
| austere(adjective, characteristic, appearance, mean, strong) |
| painful(adjective, bad, hard, tough, sharp) |
| difficult(adjective, hard, tough, rough, difficult) |
| sore(adjective, hard, nasty, difficult, harsh) |
| stern(adjective, appearance, mean, hard, tough) |
| arduous(adjective, hard, tough, rough, difficult) |
| rigid(adjective, strong, hard, tough, correct) |
| rough(adjective, mean, bad, strong, hard) |
| intense(adjective, clear, strong, cool, great) |
| burdensome(adjective, hard, tough, rough, difficult) |
| sharp(adjective, mean, strong, hard, cool) |