declaredeclaredeclaresdeclareddeclaringverb (declares, declaring, declared)1to say very clearly what you think or what you will do, often to a lot of people: He declared that he was not a thief. The country declared war on its enemy.2In an airport or port you declare things that you have bought in another country so that you can pay tax on them: Have you anything to declare?▶ declarationdeclarationdeclarationsnoun: a declaration of independence