Ingenious in a sentence.

His ingenious invention revolutionized the way we communicate.

Sarah's idea to use solar-powered lights was ingenious and saved the company a significant amount of money on electricity bills.

Sure! Here's a sentence using the word "ingenious":

"The inventor's solution to the problem was both simple and ingenious."

If you're interested in expanding your vocabulary and finding sentence examples, a great tool you can use is a dictionary or a thesaurus. Online resources like Merriam-Webster or Oxford Dictionaries provide definition, pronunciation, and example sentences for various words, including "ingenious." Additionally, you can even find word-of-the-day websites or apps that will help you learn new words and see them used in context.