Answer: sickly

AnswerCrossword Clue
SICKLYNot well
SICKLYNot the least robust.
SICKLYAiling
SICKLYFeeble
SICKLYUnder the weather
sickly(of a person's complexion or expression) Indicative of poor health
sickly(of a place, climate, or time) Causing or characterized by unhealthiness
sicklyOften ill; in poor health
sicklyto make sick (affected with ill health, also SIC) / inclined to be ailing
sicklyExcessively sentimental or mawkish
sickly(of a flavor, smell, color, or light) So unpleasant as to induce discomfort or nausea