A death grunt is when a singer uses a scream which is very low and deep. It is used in many types of music, but usually death metal. In many people's opinions, it is hard to understand the death grunt. However, some people who listen to them a lot think they are not so hard to understand. Some people believe that death grunts in music sound "scary", so they do not like them.
Other terms for death grunts are death growls, harsh vocals, and unclean vocals.