First Known Use: 14th century
Dictionary
infirm
adjective in·firm \in-ˈfərm\
: having a condition of weakness or illness that usually lasts for a long time and is caused especially by old age
Full Definition of INFIRM
1
: of poor or deteriorated vitality; especially : feeble from age
2
: weak of mind, will, or character : irresolute, vacillating
See infirm defined for English-language learners
See infirm defined for kids
ADVERTISEMENT
Origin of INFIRM
Middle English, from Latin infirmus, from in- + firmus firm
Related to INFIRM
Synonym Discussion of INFIRM
weak, feeble, frail, fragile, infirm, decrepit mean not strong enough to endure strain, pressure, or strenuous effort. weak applies to deficiency or inferiority in strength or power of any sort <felt weak after the surgery>. feeble suggests extreme weakness inviting pity or contempt <a feeble attempt to walk>. frail implies delicacy and slightness of constitution or structure <a frail teenager unable to enjoy sports>. fragile suggests frailty and brittleness unable to resist rough usage <a reclusive poet too fragile for the rigors of this world>. infirm suggests instability, unsoundness, and insecurity due to old age or crippling illness <infirm residents requiring constant care>. decrepit implies being worn-out or broken-down from long use or old age <the dowager's decrepit retainers>.
Other Medicine Terms
Rhymes with INFIRM
affirm, bagworm, bloodworm, bookworm, budworm, confirm, cutworm, deworm, dew worm, earthworm, eelworm, flatworm, glowworm, heartworm, hookworm, hornworm, inchworm, long-term, lugworm, lungworm, midterm, pinworm, ringworm, roundworm, sandworm, screwworm, short-term, silkworm, tapeworm, webworm, woodworm
INFIRM Defined for Kids
infirm
adjective in·firm \in-ˈfərm\
Definition of INFIRM for Kids
: weak or frail in body
Medical Dictionary
infirm
adjective in·firm \in-ˈfərm\
Medical Definition of INFIRM
: of poor or deteriorated vitality; especially : feeble from age
Learn More About INFIRM
Browse
Next Word in the Dictionary: infirmarerPrevious Word in the Dictionary: infinity poolAll Words Near: infirm
ADVERTISEMENT
Seen & Heard
What made you want to look up infirm? Please tell us where you read or heard it (including the quote, if possible).