Synonym: feeble, frail, sickly, unsound, unstable, weak. Antonym: firm. Similar words: infirmary, infirmity, confirm, confirmed, confirmatory, confirmation, firm, firm up. Meaning: [ɪn'fɜrm /-'fɜːm] 
adj. 1. lacking physical strength or vitality 2. lacking firmness of will or character or purpose.
adj. 1. lacking physical strength or vitality 2. lacking firmness of will or character or purpose. 
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1. Her grandmother is elderly and infirm.
2. She was too elderly and infirm to remain at home.
3. His already infirm body was racked by high fever.
4. He was over eighty years of age, infirm and totally blind.
5. She's old and infirm and has to keep to the house.
6. The old and the infirm are the most susceptible to this disease.
7. He was too infirm to hold a steady job.
8. He was old, infirm, and the most gentle man she had ever met.
9. They single out an old, young, or infirm animal and only then start the chase.
10. The old and infirm who were too feeble to keep up with the band were left behind to die.
11. Many clients are old, infirm[sentencedict.com], and often from ethnic communities.
12. Initially developed for the infirm or elderly, Ensure has made inroads among aging baby boomers, thanks to aggressive marketing.
13. They can help those who have become ill, infirm, disturbed, or aged with a minimum of institutional care.
14. It rendered this assumption infirm.
15. Great - grandmother was old and infirm.
16. care for the elderly and infirm.
17. Hunter is infirm of purpose.
18. Let the sails be rags and the sailors infirm and sickly.
19. He's old and infirm, and his movements are getting slower and slower.
20. Peter is so infirm of purpose that it is useless to ask him for advice.
21. We are here to protect and assist the weak and infirm.
22. The hotel is on a hill, which is not ideal for the infirm.
23. Hodson favours the Master because of its high roof and low loading height, which makes it easier for the infirm.
24. Many of the chalets are set on a hillside reached by steps - not ideal for the infirm or very young children.
25. He is under immense pressure to freeze benefit increases in the coming year for the jobless, the infirm, and pensioners.
26. The "Meals on Wheels' service delivers food to the old and infirm.
27. She lives with her grandmother who is elderly and infirm.
28. A fence at the bottom of a flight of steps works as an effective safety measure for infirm walkers.
29. Bell ringing, as a signal of non language communication, was especially prepared for the senile and infirm patients, with a satisfaction rate of 97.37%.
30. That is why many among you are ill and infirm, and a considerable number are dying.
More similar words: infirmary, infirmity, confirm, confirmed, confirmatory, confirmation, firm, firm up, firmer, firmly, affirm, firmness, reaffirm, on fire, firmament, terra firma, open fire, affirmation, affirmative, infidel, infinite, infinity, infidelity, infiltrate, ad infinitum, affirmative action, infiltration, infinitesimal, squirm, skirmish.