noun, plural Ef·iks, (especially collectively) Ef·ik for 1.
- a member of a people of southeastern Nigeria near the mouth of the Calabar River, closely related to the Ibibio.
- the Benue-Congo language of these people.
- plural Efiks or Efik a member of a subgroup of the Ibibio people of SE Nigeria
- the language spoken by this people, variously classified as belonging to the Benue-Congo or Kwa divisions of the Niger-Congo family