Upper Cross River language of Nigeria Umon (Amon) is an Upper Cross River language of Nigeria. References ↑ Umon at Ethnologue (18th ed., 2015) (subscription required) Cross River languagesCentral Delta Abua Abureni Kugbo Obulom–O’chi’chi’ Odual Ogbogolo Ogbia Ogbronuagum Ogoni Baan Eleme Gokana Khana Tẹẹ Upper Cross RiverNorth-South Gwune Humono Kele Oring Ubaghara Umon Zekwe East-West Ikom Legbo Lokaa Lubila Mbembe Nkukoli Nyima Yigha Others Agoi Doko Dorop Iyongiyong Kiong Ukpet-Ehom Lower Cross RiverIbibio-Efik Annang Efik Eket Ibibio Others Ebughu Enwang-Uda Ibino Iko Ilue Obolo Okobo Oro Usaghade