souterrain: French word forms
Declension of the adjective souterrain 
underground, secret
| singulier | pluriel | |
| masculin | souterrain | souterrains |
| féminin | souterraine | souterraines |
Singular and plural for souterrain, m 
tunnel
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French Verb Conjugation and Word Forms Online
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The service shows French verb conjugation, including regular, irregular, and commonly used forms, as well as noun and adjective forms by gender and number. It is useful for learning, translation, and quick grammar checks.
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