Meaning

adjective located inward; - Leonard Bernstein; - David Denby; - A.R.Gurney,Jr.

adjective located or occurring within or closer to a center

adjective innermost or essential

originCapitalization of inner, from Middle English inner, ynner, ynnere, from Old English innera, comparative of inne (“within”), from Proto-Indo-European *h₁en. A demonym for an inhabitant of inner planets of the Solar System.

Etymology from Wiktionary, CC BY-SA 3.0