gratis

1. ADV If something is done or provided gratis, it does not have to be paid for. 免費地[ADV after v]

David gives the first consultation gratis. 戴維免費提供第一次咨詢。

2. ADJ Gratis is also an adjective. 免費的

What I did for you was free, gratis, you understand?

我為你所做的都是免費的、不收錢的，你明白嗎？