talker

That little girl is quite a talker. I don't think she's stopped talking since she got in the car.那个小姑娘很爱说话，我想她上车后就没停过。

He's not much of a talker.他不太爱说话。

He's more of a talker than a doer. [=he often talks about doing things without actually doing them]他是个说得多干得少的人。