Here are a few examples of how you could use it in a sentence:
* "His speech was full of affrontive remarks, causing many in the audience to walk out."
* "The comedian's act was intended to be funny, but some found his jokes to be affrontive and inappropriate."
* "The student's affrontive behavior towards the teacher resulted in a suspension."
It's important to note that "affrontive" is a fairly strong word, and it's often better to use more common synonyms like "insulting" or "offensive" in most situations.