I'm updating my résumé and I'm trying to describe myself as "someone who learns on his own", though more briefly. I think the word "autodidact" fits but an informal survey around the workplace showed that many people don't know what the word means. I'm concerned that using the word will leave those reading my résumé scratching their heads, or worse, make me appear pretentious.
Does "autodidact" fall into the category of "five dollar words" and should I just replace it with a brief phrase?