To be deported means to be expelled from a country in which you are a foreign citizen, no matter what your length or purpose of stay within that country. For an individual to be deported, they must have broken a law or gone against a government mandate that ends their residency immediately. This essentially means that an individual is banished from the given country with little to no possibility of re-entry into that country. Usually to be deported means that an individual did something terribly wrong as it is often a last resort with other means usually sought out first and foremost.