performativesspeech
Performative speech, or performatives, refers to speech acts that accomplish something by being spoken, rather than merely describing a state of affairs. In the theory of speech acts developed by J. L. Austin, a performative utterance is one that enacts an action simply by the act of saying it, examples include "I apologize," "I promise," or "I name this ship." By contrast, constative (or descriptive) utterances report facts and can be true or false.
Key to performatives is the idea of illocutionary force—the performative's function in enacting an action. Austin
Examples illustrate the reach of performative speech across domains: legal pronouncements ("This court declares..."), ceremonial rituals