American English

Definition of underlie verb from the Oxford Advanced American Dictionary

  

underlie

 verb
verb
NAmE//ˌʌndərˈlaɪ//
 
[no passive] underlie something (formal)Verb Forms present simple I / you / we / they underlie
 
he / she / it underlies
 
past simple underlay
 
past participle underlain
 
-ing form underlying
 
 
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to be the basis or cause of something These ideas underlie much of his work. It is a principle that underlies all the party's policies. see also underlying
See the Oxford Advanced Learner's Dictionary entry: underlie