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1. To marry someone who is more attractive, intelligent, capable, of a higher social class or standing, etc., compared to oneself. He always jokes when he's out with his wife that he married up. Don't say you married up—that implies that I just settled for someone who isn't as good as me.
2. To join, combine, or integrate two different things or elements together in a way that is mutually beneficial. We're marrying up traditional techniques with bleeding-edge technologies to deliver a range of products that are both modern and timeless. This merger will marry up the strengths of both our companies, providing an even better experience to our customers.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
marry up (with someone)
Rur. to marry someone. They married up in the spring. Jane's going to marry up with someone she met at school.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.