Huh. What a feeling, finding out that you've been using a word totally incorrectly for your entire life! I guess I was going for something more along the lines of "punctuating" or "relevant".
I know that feeling! I read a lot as a kid, and I'd pick up words from context but not get their meanings right, and that got embarrassing. So I talked my folks into getting me the biggest, meanest dictionary they could lay hands on, in order to avoid embarrassing myself further. Little did I know this would lead me down a path of linguistic pedantry from which I'd never be able to return.