fandamentalist
n.— «Fandamentalists. (noun, pl.); fans who violently believe the only valid interpretation of any entertainment source is a dogmatic adherence to their favorite version of that source. Any change to the smallest detail is inherently unacceptable (see also “heresy”) and met with frantic scorn.» —“Fandamentalism” by John Rogers Kung Fu Monkey Dec. 8, 2004. (source: Double-Tongued Dictionary)
Further reading
Book recommendations and the art of apology. Martha and Grant share some good reads, including an opinionated romp through English grammar, a Spanish-language adventure novel, an account of 19th-century dictionary wars, and a gorgeously illustrated...
In 1803, a shy British pharmacist wrote a pamphlet that made him a reluctant celebrity. The reason? He proposed a revolutionary new system for classifying clouds — with Latin names we still use today, like cumulus, cirrus, and stratus. Also: when...