What Does Underage (Archive Warning) Mean?
AO3 PlatformOne of AO3's four mandatory archive warnings, flagging depictions of sexual activity involving characters under eighteen. Authors must apply it, deny it applies, or choose not to warn.
Underage (Archive Warning) in Practice
The Underage warning belongs to AO3's required disclosure tier alongside Graphic Violence, Major Character Death, and Rape/Non-Con: works containing sexual content with minors must carry the label unless the author selects 'Choose Not To Use Archive Warnings,' which itself signals readers to proceed with caution. The warning's existence reflects the archive's foundational policy bargain — content is permitted within legal bounds but must be honestly labeled, so readers can filter it out completely (exclusion filters handle this in one click) and no one encounters it unaware. The policy line is also a major front in fandom's proship/anti debates about whether labeling is sufficient. As of a 2024 update, the warning's full name specifies 'Underage Sex' for clarity about what it covers.
Example usage
"Her filters permanently exclude both Underage and Choose Not To Warn — the system exists so that's a one-time setup."
Related Terms
Archive Warnings (AO3)
AO3's mandatory disclosure system for four major content types: Graphic Depictions of Violence, Major Character Death, Rape/Non-Con, and Underage. Every work must address them — apply, deny, or decline to say.
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Rating System (AO3)
AO3's five-tier content scale: General Audiences, Teen And Up, Mature, Explicit, and Not Rated. Every work displays its rating as part of the symbol block on its listing.
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Proshipper / Profic
A label for fans who believe any subject may be depicted in fiction so long as it's properly tagged, and who oppose harassment over fictional content. The opposing position is broadly called 'anti.'
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