run off with phr v [T] 1 [ run off with sb] to go away with someone that you are having a sexual relationship with 和…私奔: Her husband ran off with his secretary. 她丈夫跟他的秘书跑了。 2 [ run off with sth] to take or steal something 拐走，偷走〔某物〕: Looters smashed windows and ran off with TVs and videos. 劫匪们打碎玻璃窗，偷走了电视机和录影机。