- IPA: /ˌʌn.də(ɹ)ˈlaɪ/
underlie (underlies, present participle underlying; past underlay, past participle underlain)
- (intransitive) To lie in a position directly beneath.
- (transitive) To lie under or beneath.
- A stratum of clay underlies the surface gravel.
- (transitive) To serve as a basis of; form the foundation of.
- a doctrine underlying a theory
- 1941, Emily Carr, Klee Wyck, Chapter 6,
- […] she was carved into the bole of a red cedar tree. Sun and storm had bleached the wood, moss here and there softened the crudeness of the modelling; sincerity underlay every stroke.
- (transitive) To be subject to; be liable to answer, as a charge or challenge.
- 1820, Walter Scott, Ivanhoe; a Romance. [...] In Three Volumes, volume (
please specify ), Edinburgh: Printed for Archibald Constable and Co.; London: Hurst, Robinson, and Co. […], OCLC 230694662 ↗:
- (mining) To underlay.