Tired.

Tired (adj.) in need of sleep or rest; weary.

A definition because you've said "tired" more times then you can count.

You said tired when they asked what's wrong.

You said tired when they asked why are you mad.

You said tired when they asked if you were sad.

You said tired every time you could.

You said tired but now you don't hear it.

You said tired and now it's every word and no word at all.

Now tired is just empty and so are you.