How to use redoutable in French 😈 Speak better French now! 🇫🇷 👉 Redoutable is a fabulous French word. It means formidable, fearsome, formidable in a scary or impressive way. It comes from redouter = to dread or fear. Most common meaning: formidable / impressive C’est une adversaire redoutable. She’s a formidable opponent. Il a une mémoire redoutable. He has a formidable memory. Un sens de l’humour redoutable ! A wicked sense of humour! Here, it’s often positive — impressive, powerful, striki