Although this show has some fantasy violence, it is by far outweighed by the positive portrayal of a strong female hero. This show targets an age group where female characters often take a more passive role. I like that WordGirl is able to be a hero, using primarily her smart rather than weapons. My son loves WordGirl, which trills me. Having a female hero (as opposed to a male hero) lets him see that women can be strong and capable.
The violence is a of a completely goofy sort. For example the Butcher showered WordGirl with Chicken Cordon Blue. Another villian had a mustard gun.
The vocabulary building component is excellent. The show introduces words, uses them in context, and reviews them in a game show portion of the show.