Deep-set (adjective)

Placed deeply in a particular position or location; set deeply into something.

Origin:

From the combination of the adverb "deep" meaning "in a deep or profound manner" and the past participle of the verb "set" meaning "to place in a particular position or location".

Examples:

1. The windows were deep-set into the walls.
2. The eyes were deep-set and dark.
3. The screws were deep-set and secure.
4. The sockets were deep-set and tight.
5. The buttons were deep-set and difficult to press.