The term 'NOT' is a three-letter word meaning to deny or refuse. It is often used in the phrase 'not as a stranger, ' which is a phrase that implies a sense of familiarity and comfort. This phrase is often used to describe a situation where two people are familiar with each other, even if they are not related or have never met before. It can also be used to describe a situation where someone is welcomed into a new environment without feeling like an outsider.