infirm

noun
1
ill and weak, especially over a long period or as a result of being old
ناتوان, ضعیف, رنجور
2
people who are weak and ill for a long period
بیمارهای ناتوان, افراد ضعیف و بیمار, ناتوانان, افراد علیل
care for the elderly and infirm