Chukwu () is the supreme being of Igbo spirituality. In the Igbo pantheon, Chukwu is the source of all other Igbo deities and is responsible for assigning them their different tasks. The Igbo people believe that all things come from Chukwu (Chiukwu), who brings the rain necessary for plants to grow and controls everything on Earth and the spiritual world. They believe Chukwu to be an undefinable omnipotent and omnipresent supreme deity that encompasses everything in space and space itself.[citation needed]
Linguistic studies suggest that the name "Chukwu" is a portmanteau of the Igbo words "chi" ("spiritual being") and "ukwu" ("great").[1]