verb (used with object), un·der·lay, un·der·lain, un·der·ly·ing.
to lie under or beneath; be situated under.
to be at the basis of; form the foundation of.
Grammar. to function as the root morpheme or original or basic form of (a derived form): The form “boy” underlies “boyish.”
Finance. to be primary to another right or security.
plead the fifth
Read more in this article about some frequently asked questions and fun facts related to our definitions.
control, inhibit, dominate, handle, decide, manage, rule, curb, determine, regulate, guide, discipline, shepherd, incline, subdue, dispose, direct, tame, predispose, restrain
Origin of underlie
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
verb -lies, -lying, -lay or -lain (tr)
to lie or be placed under or beneath
to be the foundation, cause, or basis ofcareful planning underlies all our decisions
finance to take priority over (another claim, liability, mortgage, etc)a first mortgage underlies a second
to be the root or stem from which (a word) is derived"happy" underlies "happiest"
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper