Deduce means to find the answer logically. Sherlock Holmes will deduce the identity of the criminal.
I can deduce by that grin on your face and your hands behind your back that you have a gift for me.
Guile is a word that means intelligent. A good sentence using this word would be, he used his guile to deduce and solve the complicated math problem.
The word "Deduce" is a verb.
I deduce from the given evidence
The detective was able to deduce how the crime was committed.
"Sagacious is a long word." The sagacious thinker was able to deduce the motivation behind the man's behavior.
I am not writing a sentence using that word.
Based on your question, I deduce that you do not fully understand the meaning of the word that you would like to use in a sentence. Perhaps you should consult a dictionary. You might conclude that you can use the word "deduce" as a substitute for such synonyms as "assume" or "infer."
A synonym of deduce
a sentence using the word endotracheal
This is a sentence using the word aviator.
this is a sentence using the word armchair.