What does "underlie" mean?

Underlie: To be at the basis of; to form the foundation of; to support; as, a doctrine underlying a theory.

Additional senses

  1. 2.To be subject or amenable to. [R.] The knight of Ivanhoe . . . underlies the challenge of Brian der Bois Guilbert. Sir W. Scott.
  2. 3.To lie below or under.
  3. 4.See Underlay, n., 1.

Sources