undergrounder means an underground publication or movie. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- An underground publication or movie.“1957, Manny Farber, "Underground Films", in Robert Walsh (ed.) Negative Space: Manny Farber on the movies (1998), p. 27,
The excess that is so noticeable in Stevens's brawl is absent in the least serious undergrounder, […]”
- A person who dwells underground.“[…] sewer people, derelicts, bag ladies, undergrounders, and Bowery bums. Whatever the cause of their illness, as in Scanners, homeless people are victims but, more importantly, a threat to be eliminated.”
- One who is part of a secret or underground society or subculture.“His tactics appealed to the type of Old Bolshevik undergrounder who had little patience with theoretical hairsplitting and who looked to a firm authority to take the lead in practical work.”