performative
adjective /pəˈfɔːmətɪv/
/pərˈfɔːrmətɪv/
(grammar- when somebody uses a performative word or expression, for example ‘I promise’ or ‘I apologize’, they are also doing the action indicated by the word or expression (promising or apologizing)
see also constative表述行为的(如说 I promise 或 I apologize,同时表示许诺或道歉)