What is another word for sub-excavation?
Pronunciation: [sˈʌbˌɛkskəvˈe͡ɪʃən] (IPA) 
Sub-excavation is a term typically used in construction or engineering to refer to the process of digging below the level of the existing ground. While this word is commonly used, there are a number of synonyms that can be used in its place. These include "undercutting," "underdigging," "trench excavation," and "sub-surface excavation." Other words that can be used in place of sub-excavation include "ground penetrating excavation," "sub-surface dig," or simply "digging beneath the surface." Regardless of the term used, the process of sub-excavation remains an important part of many construction projects and is essential to ensuring a stable foundation for new structures.
