To go `undercover` is to avoid detection by the entity one is observing, and especially to disguise one`s own identity or use an assumed identity for the purposes of gaining the trust of an individual or organization to learn or confirm confidential information or to gain the trust of targeted individuals in order to gather information or evide......
Found on
http://en.wikipedia.org/wiki/Undercover_operation
noun an operation involving secret work within a community or institution
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.
