What are the antonyms for SURFACE?

Synonyms for SURFACE

Usage Examples for SURFACE

  1. " There's a lot more in this than's on the surface, Hugh, my lad," he remarked when I had made an end of my tale. - "Dead Men's Money" by J. S. Fletcher
  2. " I am informed that another ship from space has reached the surface of Tepokt. - "Exile" by Horace Brown Fyfe