noun, plural in·fir·mi·ties for 1, 3.
- a physical weakness or ailment: the infirmities of age.
- quality or state of being infirm; lack of strength.
- a moral weakness or failing.
noun plural -ties
- the state or quality of being infirm
- physical weakness or debility; frailty
- a moral flaw or failing
late 14c., “disease, sickness; lack of capability, weakness,” from Latin infirmitatem (nominative infirmitas) “want of strength, weakness, feebleness,” noun of quality from infirmus (see infirm). Cf. Middle French infirmité, Old French enfermete.
- A bodily ailment or weakness, especially one brought on by old age.
- A condition or disease producing weakness.
- A failing or defect in a person’s character.