underlie verb

/ˌʌn.dəˈlaɪ/

/-dɚ-/ v [T] (underlying, underlay, underlain)

Definition

to be a hidden cause of or strong influence on something

Psychological problems very often underlie apparently physical disorders.

(Definition of underlie verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

worried or nervous about something that is going to happen

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