leave behind verb6 •To abandon.We left behind our luggage at the hotel.How could you leave me behind like that? •To forget about.We (accidentally) left behind our bags at the airport.Just leave your cares behind you and enjoy the party. •To leave (a trace of something).The wound I got in my car accident left behind a massive scar.Unfortunately, this cleaning product leaves behind a noticeable residue. •To not live longer than; to be survived by.Mrs Johnston died at thirty, and left behind three young daughters. •To outdo; to progress faster than (someone or something else).This product leaves behind all its competitors in the market. •To pass.As soon as we made our way onto the highway, we left the skyscrapers behind us. formsleft behind · leaving behind · leaves behind