Transvestism is the practice of dressing in a style or manner traditionally associated with the opposite sex. In some cultures, transvestism is practiced for religious, traditional, or ceremonial reasons.
The word – transvestism – has undergone several changes of meaning since it was first coined and is still used in a variety of senses. Today, the term transvestite is commonly considered outdated and derogatory, with the term cross-dresser used as a more appropriate replacement. This is because the term transvestite was historically used to diagnose medical disorders, including mental health disorders, and transvestism was viewed as a disorder, but the term cross-dresser was coined by the transgender community. In some cases, however, the term transvestite is seen as more appropriate for use by members of the transgender community instead of by those outside of the transgender community, and some have reclaimed the word.