anti-secrecy
adjective
an·ti-se·cre·cy 
ˌan-tē-ˈsē-krə-sē,
ˌan-tī- variants or less commonly antisecrecy
: serving or intended to prevent or restrict the concealment of information especially by governments
anti-secrecy laws
These antisecrecy trends and inclinations sometimes interact to convince administrations, Congresses, and intelligence agency heads that they must release various historical intelligence documents.
Michael Warner
Michael Warner
Word History
First Known Use
1894, in the meaning defined above