She worries too much.
He's coming along too.
You will too do it!
He's only too willing to be of service.
The hat is too big.
That's too bad!
An example of too is when you also want to go along with your friends.
An example of too is when you eat more than you should.
My error was all too apparent.
It was just too delicious!
She doesn't talk too much; I'm not too sure about this.
You're not old enough yet. I am, too!
Origin of too
- Middle English to from Old English tō to, furthermore de- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition