When someone young, or if need be actually old, and has the appearance that his outfit would look just as good on an old man. As opposed to being offensive this word is a compliment to those that respect the times of 'ol and their wonderful and now retrosexual styles.
That guy wearing his black H&M shoes, burgundy cords, black boxers, Threadless shirt, and Forever 21 cardigan looks oldmanish
by Jrlandshark January 19, 2011