The salesman was so pushy that he kept following me around asking if I wanted to buy insurance.

pushy 是形容词，由动词 push（推）加上后缀 -y 构成，字面意思是"爱推挤的"，引申为"强硬的、咄咄逼人的"，形容人过分积极或强势地推销或推进某事。