adj.亲密的；合得来的

The bartender was chummy with the regular customers. 酒吧招待员与老主顾们结为密友。

In fact, the real threat comes from overly chummy links between a state and its multinationals. 实际上，真正的威胁来自于跨国公司同某一个国家过分亲密的联系。

That's the reason why we are chummy. 那就是我们合得来的原因。