Sweatsuit (noun)

A casual, comfortable outfit consisting of a sweatshirt and sweatpants.

Origin:

From the combination of "sweat" and "suit".

Examples:

1. She lounged around the house in her favorite sweatsuit.
2. He put on his sweatsuit after a hard workout at the gym.
3. The sweatsuit was a staple of college students' wardrobes.
4. I always feel comfortable in my sweatsuit.
5. The sweatsuit is perfect for running errands or relaxing at home.