under the weather

Adjective

• somewhat ill or prone to illness
  • my poor ailing grandmother
    
  • feeling a bit indisposed today
    
  • you look a little peaked
    
  • feeling poorly
    
  • a sickly child
    
  • is unwell and can't come to work
    

Related words

• Synonyms: 
  ailing , indisposed , peaked(p) , poorly(p) , sickly , unwell , seedy