I recently started learning French and am confused by its pronunciations. The main problem being that the words never seem to sound the way they're written – isn't what it seems to be! (I know English isn't any better, but criticisms of my observations are safely off-topic here!) I need a word which indicates this deceptiveness/inconsistency while not sounding too negative. Because I still am fascinated by French.
For example, here's something I'd like to say: Oh french, you ____________ beauty!
So it really cant be too negative, unless you think the following word "beauty" makes for an amusing/endearing oxymoron. Then if the overall sentence doesn't sound too negative, I'm willing to accept any word.