* Describing a singing voice: "The tenor's falsetto soared effortlessly to the highest notes."
* Describing a spoken voice: "He spoke in a high-pitched falsetto, making it difficult to understand him."
* Describing a sound: "The wind whistling through the trees made a strange, almost falsetto sound."
* Figuratively: "He expressed his excitement in a falsetto of nervous laughter."
Here are some examples of sentences using "falsetto":
* "The opera singer's falsetto was so powerful it brought tears to my eyes."
* "The comedian's falsetto voice was hilarious, but it was hard to tell if it was real or fake."
* "The child's falsetto singing voice was surprisingly clear and beautiful."
* "He used his falsetto to imitate the sound of a bird."
* "The sound of the train's whistle was a high-pitched falsetto that echoed through the station."