wake vs wake up

Humble   Wed Dec 12, 2007 5:51 am GMT

Please, is there any difference between wake and wake up?

1. Walter woke at dawn.
2. Walter woke up at dawn.
3. Wake!
4. Wake up!
Are they all correct and common?

Guest   Wed Dec 12, 2007 6:43 am GMT
"Woke up" and "wake up" are much more common. Using it intransitively without "up" is acceptable in a literary context, though.
Another guest   Wed Dec 12, 2007 9:30 pm GMT
Wouldn't really use the imperative "wake!", only "wake up!"
Humble   Fri Dec 14, 2007 5:40 am GMT
Thank you , guys.