in ‧ fir ‧ mi ‧ ty /ɪnˈfɜːməti, ɪnˈfɜːmɪti $ -ɜːr-/ BrE AmE noun ( plural infirmities ) [uncountable and countable] formal
[ Word Family: noun : ↑ firmness , ↑ infirmity , the infirm; adjective : ↑ firm , ↑ infirm ; adverb : ↑ firmly ]
bad health or a particular illness