Definition
'Subterranean' means existing or happening under the Earth's surface. Think of it like caves π¦, tunnels π, or underground rivers π. It emphasizes being hidden from view because it is literally beneath the ground. It's different from 'hidden,' which is a general term, because 'subterranean' specifies a location. It can also describe things associated with underground environments. Itβs like the opposite of 'aerial.'