“Speaking ill behind someone's back” in Japanese
Short answer
Speaking ill behind someone's back in Japanese is “陰口” (kageguchi). Full meaning: malicious gossip, backbiting, speaking ill behind someone's back.
Other ways to say “Speaking ill behind someone's back” in Japanese
陰言
kagegoto malicious gossip, backbiting, speaking ill behind someone's back
カゲ口
kageguchi malicious gossip, backbiting, speaking ill behind someone's back
かげ口
kageguchi malicious gossip, backbiting, speaking ill behind someone's back
蔭口
kageguchi malicious gossip, backbiting, speaking ill behind someone's back
かげぐち
kageguchi malicious gossip, backbiting, speaking ill behind someone's back
Looking for the other direction? Search any Japanese word in the Nihoner lexicon, or practise what you have learned in the learning games.