| rigorous(adjective, fastidious) |
| rocky(adjective, mean, weak, anxious, ill) |
| rotten(adjective, mean, weak, down, ill) |
| run down(expression, adjective, mean, weak, green) |
| seasick |
| severe(adjective, fastidious) |
| shrinking |
| sick as a dog(expression, adjective, idiom, mean, bad) |
| sickly(adjective, anxious, sick, uneasy, uncomfortable) |
| stickling |
| suffering(adjective, mean, bad, weak, delicate) |
| tottering(adjective, mean, weak, down, ill) |
| troubled(adjective, anxious, sick, uneasy, uncomfortable) |
| uncertain(adjective, anxious, sick, uneasy, uncomfortable) |
| uncomfortable(adjective, anxious, ill, sick, unsettled) |
| under medication(expression, adjective, mean, bad, weak) |
| under the weather(expression, adjective, idiom, mean, green) |
| uneasy(adjective, anxious, sick, unwell, uncomfortable) |
| unhealthy(adjective, mean, weak, down, ill) |
| upset(adjective, anxious, sick, uneasy, uncomfortable) |