Original: Unsportsmanlike conduct (or unsporting behavior, or ungentlemanly conduct) is a term used in many professional sports to refer to a particular player or team who has acted inappropriately and\/or unprofessionally in the context of the game.
Simplified: Unsportsmanlike conduct (or unsporting behavior, or ungentlemanly conduct) describes a kind of action by professional athlete. It is when a player or team during the game that is not professional or is offensive.