The phrase "killed with kindness" describes the notion of being overwhelmed with friendliness or acts of kindness. The antonyms for this phrase would be antipathy, enmity, hatred or malice. These words connote hostility, ill will or animosity towards someone, which is the opposite of kindness. When someone is killed with kindness, they feel uncomfortable or smothered by the excessive niceness, but when someone experiences hostility, they may feel anxious, fearful, or threatened. Therefore, it is essential to strike a balance between amicable behavior and standing up for oneself. In short, practicing healthy boundaries can help avoid getting killed with kindness, and negative emotions such as hatred or malice.