What is another word for under-lain?
Pronunciation: [ˌʌndəlˈe͡ɪn] (IPA) 
Under-lain refers to something that is underneath or below. Synonyms for this term include underlaid, underlying, beneath, underneath, bottom, bottommost, and subterranean. It is a useful word for describing something that is hidden or not readily visible, such as an underlaid foundation or an underlying problem. In geological terms, under-lain can refer to the rock layers that lie beneath the surface, such as the earth's mantle. The term can also be used metaphorically to describe an underlying theme or idea in literature or art. In summary, under-lain has several useful synonyms that can add depth to written or spoken expression.
