outwardSubstantiv, Adjektiv/ˈaʊt.wɚd/US toward the outside; away from the centreBy all outward indications, he's a normal happy child, but if you talk to him, you will soon realize he has some psychological problems.
- outside of something
This building has some external pipework.
exteriorAdjektiv, Substantiv/ɪkˈstɪəɹɪə/ relating to the outside parts or surfacethe exterior part of a sphere
outerAdjektiv, Substantivaʊ.tə(r)US outsideWe ordered two cartons with twelve outers in each.
outermore – outermost
- outer surface
He's repainting the outside of his house.
- on the periphery or boundary