Of all the kids in our family, I am the cleverest.
cleverest
Both are acceptable
use the word rigorousness in a sentence
E.g. "How do you use the word plentiful in a sentence?"
how do you use the word circling in a sentence
cleverest
There is no such word as that. Do you mean "cleverest"?
There are no perfect rhymes for the word cleverest.
Pronoun
Both are acceptable
cleverer, cleverest
cleverer, cleverest
Can you use the word concluding in a sentence? Done.
You can use the word Truss in a sentence like this.
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?
Since that is not a word I would not attempt to use it in a sentence.