Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "open up" in a sentence
"He won election to the board of the Council on Foreign Relations by exploiting a new nomination-by-petition procedure designed to open up that old boy organizationone that had been recommended, interestingly, by a Council committee headed by Cyrus Vance."
"Once the bunker was sealed, it would open up only once more: the next morning, when the three prion-emitting devices were ready and their bearers were sent off to LAX, Kennedy Airport, and Heathrow in London."
"The Corsis as a rule never were ones to open up with conversation around the family dinner table, so typically it fell to Ulrika to pepper their talk with loaded questions or open-ended statements that no one dared avoid."