What is another word for under soil?
Pronunciation: [ˌʌndə sˈɔ͡ɪl] (IPA) 
The term "under soil" refers to the ground beneath the surface, usually consisting of a mixture of rocks, minerals, and organic matter. There are various synonyms for "under soil" depending on the context in which it is used. For instance, the term "subsoil" can be used to refer to the layer of soil beneath the topsoil. Other synonyms for "under soil" include subterranean soil, underground earth, below-ground earth, and subterranean layer. These synonyms highlight the hidden nature of the layer of soil beneath the surface and its importance in the growth and development of plants and other organisms that rely on it for nutrition and support.
