A Mappila (Malayalam: മാപ്പിള), also known as a Muslim Mappila, Moplahs or Jonaka Mappila, is a member of the largest Muslim group in the Indian state of Kerala. The community arose primarily as a result of the pre- and post-Islamic Arab contact with Kerala, mainly based upon trade.
Muslims of Kerala, of which Mappilas constitute a majority, make up a large community in Kerala state: 26.56% of the population. As a religious group they are the second largest after Hindus (54.75%). Mappilas share the common language of Malayalam with the other inhabitants of Kerala. Islam reached Malabar Coast as early as the 7th century AD and was assimilated with the culture and traditions of the local people. Over the centuries, the strong relations of the Mappilas with the traders from Arabia have created a profound impact on their life and culture. This has resulted in the formation of the unique tradition in literature, art, music, and history of the Mappilas Most of the Mappilas follow Shafi'i School, while a large minority follow movements that arose within Sunni Islam.
There's a difference of opinion on the exact origin of the word "Mappila" ("Moplah" in Colonial sources). By and large it is considered to be derived from a combination of the Malayalam language words maham ("great") or mam ("mother") and pillai ("son"). Some people believe that Mappila means "Son-in-Law" as the Muslim visitors often married local women and thus became sons-in-law. (Tamil Mappilai = Son in law). Another opinion is that many of Hindu Nairs who adopted islam, were sometimes termed as the "Muslim Pillai", from this the term "Mappila" may have originated. "Pillai" is another term for the Hindu Nair community.