I often spell definitely wrong, I have to conciously type it to make sure it's right. I always want to spell it definetely, or something like that (Of course, when I'm trying to spell it wrong, I can't
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Another one I have to think about is beautiful. I remember some (movie/tv show/something like that) where the person said BE-A-UTIFUL and that's how I remember to spell it
ETA: I just realized that the word 'often' is in the title, and chickenchik12 still spelled it wrong!!