Simple sentences:
* She was uninterested in the lecture on ancient history.
* He remained uninterested in the offer, despite its generous terms.
* The children were uninterested in playing with the new toys.
More complex sentences:
* Despite my best efforts to engage him in conversation, he remained uninterested and distant.
* His uninterested demeanor made it clear that he wasn't listening to anything I said.
* The company's latest product launch was met with uninterested reviews from both critics and consumers.
Using "uninterested" in different contexts:
* Formal: "The board members expressed their uninterested in the proposed merger."
* Informal: "He just sat there, looking uninterested as we talked about the latest movie."
Remember: "Uninterested" means lacking interest or enthusiasm. It can be used to describe a person's attitude, a response to something, or a general lack of engagement.