| Noun | 1. | Nigerian - a native or inhabitant of Nigeria Federal Republic of Nigeria, Nigeria - a republic in West Africa on the Gulf of Guinea; gained independence from Britain in 1960; most populous African country African - a native or inhabitant of Africa Edo - a member of a west African people living in the tropical forest region of southern Nigeria Igbo - a member of the largest ethnic group in southeastern Nigeria; "most Igbo are farmers" Yoruba - a member of a West African people living chiefly in southwestern Nigeria |
| Adj. | 1. | Nigerian - of or relating to Nigeria; "the Nigerian capital used to be Lagos" |
| 2. | Nigerian - of or relating to the people of Nigeria; "a Nigerian novelist won the Nobel Prize for literature this year" |