Unholy-alliance definitions

A coalition among seemingly antagonistic groups, especially if one is religious, for ad hoc or hidden gain. (See examples under "In literature:")
noun
0
0
Parody of same. (See examples under "Unholy Alliance may refer to:")
noun
0
0

Origin of unholy-alliance

A play on the name, Holy Alliance, for a coalition of Russia, Austria, and Prussia in 1815, used in 1855 for Western European alliances with the Ottoman Empire against the interests of Russia, Greece, and most of the Balkans.