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infirm Syllabification: in·firm
Pronunciation: /inˈfərm/

Definition of infirm in English:


1Not physically or mentally strong, especially through age or illness.
Example sentences
  • Mentally and physically infirm, he stayed in the jail lobby for three days before anyone noticed him.
  • Furthermore, the home was failing to create an environment where mentally ill and physically infirm people could properly be cared for and safely live alongside each other.
  • The development will include an elderly and mentally infirm unit, and 55 residential flats on land adjacent to the cricket ground.
frail, weak, feeble, debilitated, decrepit, disabled;
ill, unwell, sick, sickly, indisposed, ailing
1.1 archaic (Of a person or their judgment) weak; irresolute: he was infirm of purpose
More example sentences
  • While standing for an expanded trade unionism the left has to carefully but firmly distinguish itself from their Congress' infirm vision.
  • Keenly sensitive to these insults, Raglan had to grapple with a French command whose sense of purpose seemed infirm.
  • A court cannot grant finality to a constitutionally infirm judgment.


Example sentences
  • Nor am I the slightest bit interested in using the model of an out-dated, infirmly and inferiorly working European, Japanese and general world scenario.
  • The catalytic activity is related to the total SO42− groups bonded on the surface of the substrate but not those infirmly bonded.


Late Middle English (in the general sense 'weak, frail'): from Latin infirmus, from in- 'not' + firmus 'firm'.

Definition of infirm in:
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