Under-pants are a type of undergarment that is worn underneath clothing for hygiene purposes. They come in various styles, sizes, materials, and colors. The term "under-pants" is commonly used in the United States, but there are many other synonyms for this word that are used in different regions of the world. Some of these synonyms include underwear, briefs, boxers, panties, knickers, jockeys, trunks, slips, bloomers, drawers, and more. Although the terms may vary, the purpose of these undergarments remains the same - to provide comfort and protection to the wearer.