Определение swearing-in в Английский Язык Английский Язык словарь
The swearing-in at the beginning of a trial or official appointment is the act of making formal promises to fulfil the duties it involves. a ceremony in which someone with a new public job or position officially promises to do their duty well
When someone is sworn in, they formally promise to fulfil the duties of a new job or appointment. Soon after the New Year, the new Congress will come to Washington to be sworn in