Aye, I think most of the problems with magic is simply having it get out of hand energy wise. But you won't summon a big fiery vortex if you mispronounce a word!

Another thing is that, in chaos magic you can make up gibberish for a spell or ritual and if you REALLY believe in it, it will usually work, or at least that's the theory behind chaotic magic.
As for the OP's response, I haven't really had any blatant backfires or anything. But I truthfully don't really mess with magic all that often. I tend to be an armchair magician, (or witch lol). I know, I am bad.