1. Verb
To lie under; to rest beneath; to be situated under; as, a stratum of clay underlies the surface gravel.
2. Verb
To be at the basis of; to form the foundation of; to support; as, a doctrine underlying a theory.
3. Verb
To be subject or amenable to.
4. Verb
To lie below or under.
5. Noun
See Underlay, n., 1.
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