Adjective: sickly (sicklier,sickliest) sik-lee
- Somewhat ill, feeling or being in bad health
"a sickly child";
- ailing, indisposed, peaked, poorly, unwell, under the weather [informal], seedy [archaic], out of sorts [informal], off-colour [Brit, informal], grotty [Brit, informal], crook [Austral, NZ, informal], cruddy [informal]
- Unhealthy looking
"His sickly complexion suggested a lack of sunlight";
- sallow, peaky [Brit, informal]
Derived forms: sickliest, sicklier