The definition of a fanatic is a person who is overly excited and interested in something.
An example of fanatic is someone with a room devoted to Elvis Presley in their two-bedroom house.
Origin of fanaticfrom Classical Latin fanaticus, of a temple, hence enthusiastic, inspired from fanum, a temple: see fane
a person whose extreme zeal, piety, etc. goes beyond what is reasonable; zealot
A person marked or motivated by an extreme, unreasoning enthusiasm, as for a cause.
Origin of fanaticLatin fānāticus inspired by orgiastic rites, pertaining to a temple from fānum temple ; see dhēs- in Indo-European roots.
(comparative more fanatic, superlative most fanatic)
- A person who is zealously enthusiastic for some cause, especially in religion.