Here are examples of the word/phrase "intrepidity" used in a sentence and paraphrased in a sentence...
It is mandatory that a hero consists of intrepidity.
It is mandatory that a hero consists of bravery.
No matter how many obstacles appeared in front of her, her intrepidity did not waver.
No matter how many obstacles appeared in front of her, her valiancy did not waver.
They didn't want to go out there because they lacked intrepidity.
They didn't want to go out there because they lacked courage.
Other Examples...