not strong; unhealthy; ailing.

of, connected with, or arising from ill health

a sickly complexion.

marked by the prevalence of ill health, as a region

the epidemic left the town sickly.

causing sickness.

nauseating.

maudlin and insipid; mawkish

sickly sentimentality.

faint or feeble, as light or color.

in a sick or sickly manner.

to cover with a sickly hue.