1. A person motivated by irrational enthusiasm (as for a cause)
   "A fanatic is one who can't change his mind and won't change the subject"
   - fiend

1. Marked by excessive enthusiasm for and intense devotion to a cause or idea
   - fanatical, overzealous, rabid

Derived forms: fanatics

See also: fanatically, fanatism, passionate

Type of: enthusiast, partisan, partizan

Encyclopedia: Fanatic

• impromptu
• improper
• improper fraction
• improperly
• improperness
• impropriety
• improv
• improvability
• improvable
• improve
• improved
• improvement
• improver
• improvidence
• improvident
• improvidently
• improving
• improvisation
• improvisational
• improvisatory
• improvise
• improvised
• improvised explosive device
• improviser
• improvize