Ne uccide più la lingua che la spada

Meaning: Words can do more harm than weapons.

Literally: The tongue kills more than the sword

Example: “Quel pettegolezzo le ha rovinato la carriera. Ne uccide più la lingua che la spada.” — That gossip ruined her career: the tongue is sharper than the sword.

Equivalents in English, French, Spanish, Japanese, Portuguese, and 3 more languages

English: Better that the feet slip than the tongue.
French: Mieux vaut glisser du pied que de la langue (literally: Better a slip of the foot than of the tongue)
Spanish: Por la boca muere el pez (literally: The fish dies by its mouth)
Japanese: 口は災いの元 (Kuchi wa wazawai no moto) (literally: The mouth is the source of calamity)
Portuguese: Pela boca morre o peixe (literally: The fish dies by its mouth)
Dutch: Beter met de voet dan met de tong te struikelen (literally: Better to stumble with the foot than with the tongue)
Russian: Язык мой — враг мой (Yazyk moy — vrag moy) (literally: My tongue is my enemy)
Chinese: 祸从口出 (Huò cóng kǒu chū) (literally: Disaster comes out of the mouth)