Jolter is a word that means something or someone that causes a jolt or sudden movement. There are many synonyms for this word, including shaker, jigger, jumper, bouncer, shudderer, judderer, twitcher and rattler. Each of these words describes something or someone that causes a sudden movement or vibration. Additionally, there are other words that are similar in meaning to jolter, including shaker, trembler, and jitterer, which all refer to things or people that shake or tremble. Regardless of the word you use, it's important to choose a synonym that accurately describes the jolting or shaking motion that is being referred to.