phatic
/ˈfætɪk/adjective
- denoting or relating to language used for general purposes of social interaction, rather than to convey information or ask questions. Utterances such as hello, how are you? and nice morning, isn't it? are phatic（语言）交际性的, 应酬的。
词源
1920s: from Greek phatos 'spoken' or phatikos 'affirming'.