punctual

1. ADJ If you are punctual, you do something or arrive somewhere at the right time and are not late. 准时的

He's always very punctual. I'll see if he's here yet. 他一向很准时。我要看看他是不是已经来了。

2. punctuallyADV 准时地

My guest arrived punctually. 我的客人准时到了。