What is the meaning of Sickly?

Frequently ill or in poor health; weakly.

Not in good health; (somewhat) sick.

Characterized by poor or unhealthy growth.

Appearing ill, infirm or unhealthy; giving the appearance of illness.

Shedding a relatively small amount of light; (of light) not very bright.

Lacking intensity or vigour.

Associated with poor moral or mental well-being.

Tending to produce nausea.

Overly sweet.

Marked by the occurrence of illness or disease (of a period of time).

Tending to produce disease or poor health.

To make (something) sickly.

To become sickly.

In a sick manner; in a way that reflects or causes sickness.

Source: wiktionary.org