hail-fellow-well-met
adjective UK old-fashioned uk/ˌheɪl.fel.əʊ.welˈmet/ us/ˌheɪl.fel.oʊ.welˈmet/
（人或行为）十分友好的，过分亲热的
If a man or his actions are described as hail-fellow-well-met, they are very friendly and enthusiastic, sometimes in a way that is not sincere.
He was greeted with the usual hail-fellow-well-met slap on the back and handshake. 人们用一贯的拍背和握手等亲热方式来欢迎他。