Loathsome describes something so disgusting or morally repulsive that it makes you recoil. When something is loathsome, you feel a deep revulsion, almost a physical reaction of wanting to get away from it.

A loathsome smell might make you cover your nose and step back. A loathsome creature in a story, like Gollum in The Lord of the Rings, combines physical ugliness with nasty, selfish behavior that makes readers uncomfortable. When someone acts in a loathsome way, perhaps bullying someone weaker or lying to hurt others, their behavior goes beyond merely rude or unkind into truly repellent territory.

The word carries strong emotional weight. You might find broccoli unpleasant, but you'd reserve loathsome for something that genuinely disgusts you, like finding maggots in your lunch or seeing someone be cruel to a puppy. Loathsome suggests that something offends not just your taste but your sense of what's right or decent. It's a word that combines disgust with moral judgment, making it particularly powerful when describing truly awful things or behavior.