Oh, I understand now. Sorry, I misread your post.
Nope, First word can only be achieved with Javascript or Jquery manipulation, which means DOM-Hacking, and it's not a good idea.
I think you'll have to create 2 text box to separate your words, and assign a class/style to each of them.
If you have an issue with the positioning and the width of the text box elements, you can use CSS to change the position absolute to relative, but it's a bit of work.