fed (adj.)

past-participle adjective from feed (v.). Fed up "surfeited, disgusted, bored," is British slang first recorded 1900 (some early uses connect it to the Boer War), extended to U.S. by World War I; probably from earlier phrases like fed up to the back teeth. Earlier it was used of livestock, "fatten up by feeding." The notion probably is the same one in to have had enough "to have had too much."

fed (n.)

1788, short for Federalist; as colloquial for "official of the federal government," from 1916; especially, since 1930s, of FBI agents.

updated on October 28, 2014

Definitions of fed from WordNet

Fed (n.)
any federal law-enforcement officer;
Synonyms: Federal / federal official
Fed (n.)
the central bank of the United States; incorporates 12 Federal Reserve branch banks and all national banks and state-chartered commercial banks and some trust companies;
Synonyms: Federal Reserve System / Federal Reserve / frs
Etymologies are not definitions. From, not affiliated with etymonline.