A nickname is an informal name for a person, place or thing. It is usually based on a person’s characteristics, appearance or experiences, and is used as an alternative to the person’s real name. Nicknames can be given by friends, family or even strangers, and can be used in a variety of settings. Some nicknames are affectionate and are used as terms of endearment, while others may be more derogatory and used to poke fun at someone. Nicknames can also be used to express admiration, respect or familiarity.