souterrain
/su.tɛ.ʁɛ̃/
The French word for subterranean is souterrain.
The adjective souterrain describes things that are below ground or under the earth. To convey the idea of being underground, you can also use the expression Sous terre.
Meaning: below ground, under the earth (adj)
How does it change in a sentence?
As an adjective, souterrain changes to agree with the noun it describes: it becomes souterraine in the feminine form and takes an 's' to become souterrains in the plural form.
How do you pronounce it?
/su.tɛ.ʁɛ̃/. The word has 3 syllables.
Did you know?
- In French, the term sous terre is often used idiomatically to mean 'dead', much like the English phrase 'six feet under'.
- The feminine form souterraine is used for the word galerie, which can mean both an art gallery and an underground tunnel.
- If you are describing a secret, underground way of acting in French, you might use the adjective souterrain to imply something is hidden or clandestine.
Examples in context
- un passage souterrainA subterranean passage
- des tunnels souterrainsSubterranean tunnels
- une rivière souterraineAn underground river
- il vit dans un appartement sous terreHe lives in an underground apartment
- Les archives sont dans le souterrainThe archives are in the subterranean [part]
- Une grotte souterraineA subterranean cave
- Le monde souterrainThe subterranean world
- La cité souterraine de ParisThe subterranean city of Paris
- Elle a découvert un passage souterrain cachéShe discovered a hidden subterranean passage
- Le passage souterrain est très étroit.The subterranean passage is very narrow.
- Ils ont découvert un réseau souterrain.They discovered a subterranean network.
- L'eau circule dans un canal souterrain.The water flows through a subterranean canal.
Example conversation
Lucas and Chloé are exploring an old abandoned park.
- ChloéRegarde cette entrée souterraine, Lucas !Look at this subterranean entrance, Lucas!
- LucasC'est une structure souterraine impressionnante.It is an impressive subterranean structure.
- ChloéEst-ce que tu as peur de descendre ?Are you afraid to go down?
- LucasNon, je suis très curieux.No, I am very curious.
Sources
- Wiktionary, “subterranean” translations and entries souterrain, CC BY-SA 4.0, dump of 2026-09-26.
