noun, feminine/lɑ̃ɡ də vi.pɛʁ/plural: langues de vipère
serpent's tongue, tendency to speak maliciously; person with such a tendency, malicious gossip
/lɑ̃ɡ də vi.pɛʁ/
serpent's tongue, tendency to speak maliciously; person with such a tendency, malicious gossip