1. He wore semiformal attire.

2. For formal or semiformal functions, conventional or modified versions of national dress will be suitable.

3. I had never been to a semiformal dance before, and now was my chance.

4. As is often the case in software, an organized semiformal presentation of the use cases helps you get organized.

5. My design for this collection will be funky but still elegant you can wear it to semiformal occasional events.