John Quincy Adams john·quin·cya·dams uncommon noun 1. 6th President of the United States; son of John Adams (1767-1848) SynonymsAdamsJohn Quincy AdamsPresident AdamsPresident John Quincy Adams Related words Broader terms President of the United States WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.