Joltiness refers to an abrupt or sudden jarring sensation. There are several synonyms that can be used to describe the same feeling. The word jarring is closely related to joltiness in terms of their meanings. Other synonyms for joltiness include jerkiness, bumpiness, rattling and shaking. These words are often used to describe the sensation of something that is not quite smooth or steady. For example, a rough road can cause joltiness or bumpiness, while a bumpy roller coaster can create a jerky or rattling feeling. Regardless of which synonym is used, they all convey the sense of an unexpected or sudden movement.