Answer:
When set loose I fly away. Never so cursed as when I go astray.
It is a sound of empty, speak and it'll talk back plenty. But all the more you yack, you'll get the same words back.
It's in your hand though you can not feel it. Only you and time can reveal it.
It stands upright and can be quite grand. Its secret is not hidden but right at hand. What is it?
What has a big mouth, yet never speaks?
What is so fragile that saying its name breaks it?