The term 'person with no religion' can be summarized as an INFIDEL, which is a seven-letter word. An INFIDEL is someone who does not adhere to any particular religion or faith. This term has been used throughout history to describe those who do not follow the same religious beliefs as the majority of people in a given society. In some cases, it has been used to refer to those who are considered heretics or apostates. In modern times, it is often used to describe those who are agnostic or atheist.