Underground: Definition, Usage & Common Examples

Meaning 1：below ground (underground)

underground 🔊

/ˈʌndərɡraʊnd/

adj.

below the surface of the ground.

below ground 🔊

➕

/bɪˈloʊ ɡraʊnd/

adj.

Located or situated beneath the surface of the earth.

📁 Category：Transportation & Travel 🔖 Level：初级

📘 Details & Usage

📖 Root Explanation

From 'under' (beneath) and 'ground' (earth), meaning below the surface.

💡 Mnemonic

Under + ground = literally beneath the earth's surface, like a tunnel.

📖 Example

We waited in the damp, cool air of the underground subway station for our train to arrive. 🔊 We waited in the damp, cool air of the underground subway station for our train to arrive.

🔗 Collocations

underground railway – a train system that operates below ground

underground parking – a parking facility located beneath the surface

underground water – water resources found below the earth's crust

🔄 Synonyms

subterranean (adj.) – existing or occurring beneath the earth's surface

belowground (adj.) – situated under the ground level

buried (adj.) – placed or hidden underground

🚫 Antonyms

aboveground (adj.) – positioned on or above the ground surface

surface (adj.) – pertaining to the outer layer or top part

📖 Cultural Story

Derived from Old English 'under' and 'grund'. Now often refers to subway systems, like London's Underground, emphasizing hidden transport.