How do you use pretense as a noun in sentence?

Here are some examples of how to use "pretense" as a noun in a sentence:

* Her smile was a mere pretense, hiding the pain she felt. (This uses pretense to mean a false outward appearance)

* They were living a life of pretense, pretending to be wealthier than they actually were. (This uses pretense to mean the act of pretending to be something you're not)

* He dropped the pretense of being interested in her work and admitted he was only there for the free food. (This uses pretense to mean a false show of interest)

* Underneath the pretense of friendship, she was secretly plotting against him. (This uses pretense to mean a false cover for a hidden motive)

* Their relationship was built on a foundation of pretense, with both parties hiding their true feelings. (This uses pretense to mean a false basis or foundation)

Let me know if you'd like more examples or have a specific context in mind!