Describing appearance or health:
* The child had a sickly complexion, pale and lacking color.
* After the flu, he felt sickly for weeks, unable to shake the lingering cough.
* The plant looked sickly, its leaves yellowing and drooping.
Describing a sound or color:
* The room was painted a sickly shade of yellow that made it feel even smaller.
* The singer's voice was thin and sickly, barely audible above the orchestra.
Figurative language:
* His attempt at humor was sickly sweet, like a dessert with too much sugar.
* The play was a sickly melodrama, full of over-the-top emotions and dramatic moments.
Note: "Sickly" can have negative connotations, suggesting weakness, ill-health, or unpleasantness. It's important to use it thoughtfully, considering the context and desired meaning.