[ in-fur-mi-tee ]
/ ɪnˈfɜr mɪ ti /

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.

Nearby words

  1. infinitum,
  2. infinity,
  3. infirm,
  4. infirmarian,
  5. infirmary,
  6. infirmly,
  7. infix,
  8. infixion,
  9. infl.,
  10. inflame

Origin of infirmity

1325–75; Middle English infirmite < Latin infirmitās. See infirm, -ity

Related formssu·per·in·fir·mi·ty, noun, plural su·per·in·fir·mi·ties. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for infirmity

British Dictionary definitions for infirmity


/ (ɪnˈfɜːmɪtɪ) /

noun plural -ties

the state or quality of being infirm
physical weakness or debility; frailty
a moral flaw or failing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for infirmity



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.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for infirmity


[ ĭn-fûrmĭ-tē ]


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.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.