1 inside, internal, inner, inward:
The interior surfaces are to be painted white.
2 internal, domestic, civil, national, local, home:
We will not accept the interference of foreign governments in our interior affairs
3 inner, private, intimate, personal, individual, secret, hidden, veiled:
Some of Hamlet's great speeches are in the form of interior monologues, or soliloquies
4 upland, inland, up-country, land-locked:
The most beautiful scenery is in the interior part of the country, away from the marshy coast.
The interior is coated with Teflon.
6 heart, centre, middle, core, depths:
This is the story of a journey to the interior of the earth.
7 uplands, up-country, heartland, hinterland:
The interior is covered with rocks and scrub pine.