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souterrain

/su.tɛ.ʁɛ̃/

adjective/su.tɛ.ʁɛ̃/

underground

Related: économie souterraine

Etymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Old French sus- French sou- Proto-Indo-European *ters- Proto-Indo-European *tersos Proto-Italic *terzos Proto-Indo-European *-nós Proto-Italic *-nos Proto-Italic *terzeznos Latin terrēnum Vulgar Latin *terranum Old French terrain French terrain French souterrain From sou- + terrain, based on the model of Latin subterraneus.

noun, masculine/su.tɛ.ʁɛ̃/plural: souterrains

underground passage, tunnel

Etymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Old French sus- French sou- Proto-Indo-European *ters- Proto-Indo-European *tersos Proto-Italic *terzos Proto-Indo-European *-nós Proto-Italic *-nos Proto-Italic *terzeznos Latin terrēnum Vulgar Latin *terranum Old French terrain French terrain French souterrain From sou- + terrain, based on the model of Latin subterraneus.