The sales manager was glad-handing every potential client at the meeting, which came across as insincere.

glad-handing 是由形容词 glad（高兴的）和名词 hand（手）组成的复合动词，字面意思是"高兴地握手"。在商业场合中，这个词常用来形容"过分热情地招呼或讨好（客户等）"，带有刻意为之的意味，可能显得不够真诚。