DictionarybuffEnthusiast
noun

buff

BUHF/bʌf/

A knowledgeable and enthusiastic admirer of a subject.

The railway buff studies the model locomotive with knowledgeable delight.

A Black railway enthusiast studies a detailed model steam locomotive with knowledgeable delight.
Etymology

Buffalo-hide leather gave its name to the color of New York volunteer firefighters’ uniforms. That uniform association led to buff meaning an enthusiast—the sense used for someone devoted to a subject.

In context

CBS Mornings1:14
you're a huge history buff. So, how did you decide to marry your love of history
Ed Helms trades "The Office" for history lessons in new book "SNAFU"

More examples

  • Two film buffs debated the ending.
  • She is a history buff.
  • The museum attracts aviation buffs.

Forms

buff · buffs

Similar words

enthusiast
Enthusiast is neutral and broader.
aficionado
Aficionado emphasizes informed appreciation.