Such a sentence could take some time to come up with.
I am not writing a sentence using that word.
I can give you a sentence using the word galaxy.
a sentence using the word endotracheal
This is a sentence using the word aviator.
I am saying a sentence using the word collagen.
This is a sentence using the word monomer. :P
this is a sentence using the word armchair.
Need a sentence using the word crater?
Please type a sentence using the word assertion.
I can write a sentence using the word scorn!
This is an example of a sentence using the word breakfast.
How about: "Someone asked me for a sentence using the word derivative."