Infirm's synonym is weak so just use the common word weak in a sentence and replace it with infirm.
For instance...
My grandmother became weak with age.
My grandmother became infirm with age.
Voila! By doing that you just made a sentence for INFIRM.
sick tick, infirm worm
You can use the word Truss in a sentence like this.
Can you use the word concluding in a sentence? Done.
Just use it! Or do you mean, can you use the word beheld in a sentence.
How do you use the word decibel in a sentence?What is decibel used for?
You can use the word Terrorist in a sentence as " Muslims are not terrorist ".
You just did use the word colonize in a sentence.
Since that is not a word I would not attempt to use it in a sentence.
use the word puzzlement in a sentence
can i get a sentence for the word abhorrence
a sentence with the word resilient
the answer is......... How do you use the word lets in a sentence?