phatic
adjective language specialized uk/ˈfæt.ɪk/ us/ˈfæt̬.ɪk/
（语言）交际性的;交流感情的
Phatic language has a social purpose, rather than being intended to give information.
phatic communication/utterances 交流感情的通信／言谈
the phatic meaning of "How are you?" “你好吗”的交际性意义