Part of speech:
Lacking in vigour or expression.
Weakened or worn out from age or wear
Unpropitious, unkind, faulty, not up to reasonable standard.
Lacking strength; weak; languid; inclined to swoon; as, faint with fatigue, hunger, or thirst.
In poor health; sickly
Trembling, tottering, or exhibiting mental impairment associated with aging.
Slender and delicate; not robust; weak
The definition of lame is being physically disabled causing a limp or something that is weak and unsatisfactory.
In poor health; chronically sick or prone to sickness; not strong or robust
Not safe and secure financially
The definition of worn is a person or thing that's been changed or damaged from being used, or showing the result of being overworked or worried.
Having good health; well; sound
Having an offensive or intense odor or flavor.
Requiring or characterized by much strength or energy:
Enjoying or requiring much food:
Founded in law; legal; valid; not defective.
Ill-conceived and inadequate; ineffectual
The definition of puny is something insufficient in size or strength.
Not solid or heavy; flimsy; light
Not safe from danger
The definition of precarious is something dependent on forces or circumstances outside one's control.
Not dependable or reliable; questionable
Wavering or fickle:
Devoid of sap; dry.
Find another word for infirm. In this page you can discover 53 synonyms, antonyms, idiomatic expressions, and related words for infirm, like: weak, decrepit, ill, anemic, delicate, faint, feeble, sick, ailing, anile and brittle.