The AI-powered English dictionary
plural actifans or actifen
(dated, fandom slang) A person, particularly a fan of science fiction, involved in fanac or fan activity. quotations
If you even read StF you'll do. You don't have to be an actifan, just so you read StF.
1947 January, Startling Stories, volume 14, number 3
Really, I seem to have reversed things a little by being a letter-hack after becoming an actifan.
1955 Summer, Ted E. White, “The Vizigraph”, in Planet Stories, volume 6, number 11, page 92
Actifans end up feeling they're being forced to pay for other people's "good time" and realize the mere attendance of these other-media fans means they will have to pay (through increased membership fees) for things SF Worldcons once got for free.
1994, Joseph L. Sanders, Science Fiction Fandom, page 94