also G.O.P., "U.S. Republican Party," 1884, an abbreviation of Grand Old Party. The Republicans were so called from 1876; the Democratic Party also was referred to occasionally as grand old party, with lower-case letters, in 1870s-80s when the Republicans (formed in 1854) still were considered new and radical. The designation grand old ______ is from about 1850; in Great Britain, Lord Palmerston was known as the Grand Old Man by 1880, and it was abbreviated to G.O.M. by 1882.

updated on April 13, 2015

Definitions of GOP from WordNet

gop (n.)
the younger of two major political parties in the United States; GOP is an acronym for grand old party;
Synonyms: Republican Party
Etymologies are not definitions. From, not affiliated with etymonline.