Reflation is the process: more money being used in a country on purpose, so that trade picks up after a quiet or painful time. It sits beside deflation (activity and prices falling) and near inflation (prices rising). The hope is a gentle lift — shops busier, people hiring — not a wild jump in prices. Though actually, one can slide into the other, and economists do not all draw the line in the same place. It is a formal, news-and-textbook word. You will almost never hear it about a household; it is about a whole country.