Suit is a term with various meanings:

• A lawsuit, an action brought before a court, as to recover a right or redress a grievance.
• Suit (clothing), a combination of clothing, such as a jacket and matching trousers.
• Environmental suit, a piece of clothing used for a particular activity or in a particular environment, for example a space suit or diving suit.
• Jumpsuit, catsuit, or swimsuit, a one-piece outfit.
• Suit (cards), one of four categories into which a deck of cards is divided.
• Slang for professional (sometimes including government employees), because they usually wear suits (as in suit (clothing) above). Usually used as a negative reference to someone seen as part of the Establishment.
  • Used in a similar sense by hackers to refer to management ^*.
• Suit (album), the name of one of rapper Nelly's 2004 albums.