Can you use the word joyous at beginning of a sentence?

Yes, you can use the word "joyous" at the beginning of a sentence. Here are some examples:

* Joyous laughter filled the room as the children played.

* Joyous news arrived, bringing relief and hope to the community.

* Joyous celebrations marked the end of a long and arduous journey.

The word "joyous" is an adjective, so it can be used to describe a noun or pronoun. In these examples, "joyous" describes the laughter, news, and celebrations, respectively.