The word "ghostish" is a rather uncommon term that indicates something that is ghostly or eerie. Other synonyms for this word could be spooky, ethereal, spectral or phantom-like. These adjectives can be used to describe a variety of things that may convey a sense of supernatural, mysterious or immaterial. For example, a dimly lit room or dilapidated building could be described as ghostish, especially if it has an unsettling atmosphere. Furthermore, an eerie sound or inexplicable occurrence may also be referred to as ghostish. In essence, ghostish is a word that can be used to indicate something that evokes a sense of the paranormal or the unknown.