Soft wrapping and then some..

Hey all, I was just wondering if there was a way to softwrap using word 
boundaries?  No matter what combination of options I use, I can't seem 
to get nano to keep the words at the end of the line in tact.  Instead, 
it will wrap in the middle of the word instead of sending the entire 
word to the next line.

Basically, I'm looking for a way to do the same as vim does with "set 
lbr" setting in vimrc.

Is this possible?

Thanks in advance!

--
Nick