1. the state or quality of being sickly; poor health or weakness
2. an unhealthy or unpleasant appearance or quality

Examples

• The child’s sickliness worried his parents throughout the winter.
• Her sickliness was evident in her pale complexion and frequent fatigue.
• The sickliness of the plants indicated they needed better soil.
• Despite his sickliness as a youth, he grew into a strong adult.
• The sickliness of the light made the room feel gloomy.
• The doctor attributed her sickliness to poor nutrition.
• His chronic sickliness prevented him from playing sports.