Decollated refers to the act of beheading or having one's head removed. Synonyms for this word include decapitated, executed, guillotined, severed, chopped off, separated, and detached. Some slightly less literal synonyms for decollated might include eliminated, terminated, extinguished, eradicated, destroyed, or removed. These words can be used to describe a wide range of scenarios, from executions to the removal of inanimate objects. Regardless of the context in which they are used, all of these synonyms convey the sense of something or someone being completely severed or removed from its original state.