back to front adjective 1adverb 1 adjective1 •Reversed, with the back now at the front.The classic VW Beetle is a back to front car, with the engine at the rear. adverb1 •Turned so that the back is now at the front; the wrong way around.I was in such a hurry that I put my underpants on back to front.(figuratively, by extension) Of an order or cause of events, misunderstood or misinterpreted.