Rafida
Rafida (Arabic: رافضة, romanized: Rāfiḍa, lit. 'rejectors') is a polemical term referring to Shia Muslims. It derives from Shia Muslims' rejection of the legitimacy of Abu Bakr (r. 632–634), Umar (r. 634–644), and Uthman (r. 644–656) as caliphs, in favor of an Imamate beginning with Ali ibn Abi Talib (r. 656–661), the cousin and son-in-law of the Islamic prophet Muhammad.