What term is used to describe illegal moves in martial arts competitions?

The term that is used to describe illegal moves in martial arts competitions is "fouls." This terminology is standard across various martial arts disciplines and indicates specific actions that violate the rules of competition. Fouls can include strikes to prohibited areas, excessive force, or techniques that are not allowed according to the governing body’s regulations. Recognizing fouls is crucial for maintaining fair play and ensuring the safety of all participants in a match.

The other terms do not represent this concept accurately. "Actions" and "moves" refer to the techniques employed by competitors, whether legal or illegal, without specifying their legality. "Errors" might suggest mistakes or misjudgments rather than deliberate rule violations. Thus, "fouls" is the precise term that encapsulates moves deemed illegal within the context of martial arts competitions.