trufan
n.— «1976 Fisher Strekfan’s Glossary 6 “Trufan: The total fan, one who embraces every aspect of fandom. This has another meaning in SFandom but the single definition has been prevalent in STrekdom so far.”» —“Star Trek Lives: Trekker Slang” by Patricia Byrd American Speech Spring, 1978. (source: Double-Tongued Dictionary)