1、happy的意思是：高兴的；幸福的；幸运的；开心的。

2、单词例句：

It was the happiest day in my life.这是我一生中最开心日子。

A happy young couple reminded us of our old happy days.看到了一对幸福的青年夫妇就使我们想起了自己当年的幸福的日子。

We had a happy reunion after many years.我们在分别多年之后又幸福的团聚在一起。