What is another word for under-flows?
Pronunciation: [ˌʌndəflˈə͡ʊz] (IPA) 
Under-flows, also referred to as subterranean streams, are water bodies that flow beneath the Earth's surface and are not readily visible to the naked eye. They can be synonyms with sub-surface water, underground rivers, and hidden streams. Various other terms are also used to describe this phenomenon, such as subterranean lakes, secret streams, and invisible waterways. These synonyms are essential in effectively communicating the presence of under-flows to others. They play an important role in the understanding and exploration of water bodies that exist beyond our immediate view and help us appreciate the vast and intricate nature of water systems.
