assure/əˋʃUr; əˈʃʊə/v [T] 1 to tell someone that something is definitely true or will happen, to try to stop them worrying 使确信﹔向…保证﹔使放心: assure sb (that) She kept assuring me that she felt quite well. 她总是安慰我﹐说她身体很好。I can assure you , the painting is quite genuine. 我可以向你保证﹐这幅画是真品。2 to make something certain to happen or be successful 确保﹐使确定: enough money to assure the success of the project 确保该项目成功的充足资金