According to Merriam-Webster, the word "wraithier" is spelled with a long "a" sound for the first syllable and a soft "r" at the end. It is pronounced as "/ˈrā-t͟hē-ər/". The second syllable is pronounced with a long "e", denoted by the letter "i". The word's meaning refers to something that is more like a wraith, which is a ghost-like apparition. Although it is not a commonly used word, knowing its proper spelling and pronunciation can help to enhance one's vocabulary.