According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern EVO-----. That is, eight letter words with 1st letter E and 2nd letter V and 3rd letter O. In alphabetical order, they are:
evocable
evocated
evocates
evocator
evoluted
evolutes
evolvent
evolvers
evolving
evonymus