Innerwear is a term used to describe undergarments that are worn closest to the skin. There are several synonyms for this word that you may find useful such as underwear, lingerie, intimates, underclothes, undergarments, and base layer clothing. These terms describe different types of innerwear for both men and women such as bras, briefs, boxers, panties, thongs, and other similar items. These synonyms are frequently used interchangeably based on personal preference and regional differences. They are often used when discussing clothing categories, fashion, and functionality, making them important terms to know when shopping or discussing topics related to innerwear.