Good question. 'Inhuman' and 'Inhumane', mean the same thing. But they are sometimes used in different ways. Both mean cruel/insensitive. But 'inhumane' emphasizes the subject. 'Inhuman' stresses the insensitive behavior. Your sentence, "Factory farming is inhumane" would be best. But if the sentences were "His expression was so cruel and inhuman," then 'inhuman' would be the best word.

As Shelby and Chris have said, they are very similar. However, "inhuman" is much more extreme. It means "treated as if someone isn't human." For example, "Adolf Hitler's treatment of Jews was inhuman." This means Hitler treated Jews like they weren't people. In general, "inhuman" is only used when describing treatment of humans because it means "treated like NOT human." "Inhumane" generally means "cruel." For example, "That man's treatment of animals is inhumane." This means the man is very cruel to the animals. In your sentence, "inhumane" is probably best. Unless the farming treats humans wrongly, use "inhumane." Hope this helped! Let me know if you have any questions.

"inhuman" is much stronger than "inhumane" "inhumane"= not practicing the virtue of humanity (~=仁). In modern English, "humane" and "inhumane" are usually used when talking about the way we treat animals. "inhuman"=so bad that the person doing it doesn't seem like a human. They seem like a monster. It's inhumane to keep a dog indoors all day.. You should make sure that your dog has plenty of opportunities to go on walks. You torture children!? That's inhuman! You should be put in jail forever! ALSO The original word was X. The new word is Y. I can say: I substituted X with Y. OR I can say: I substituted Y for X. It is wrong to say: I substituted X for Y.