What is another word for jerks up and down?
Pronunciation: [d͡ʒˈɜːks ˌʌp and dˈa͡ʊn] (IPA) 
The phrase "jerks up and down" is often used to describe sudden, jolting movements. Some possible synonyms for this phrase include "bounces," "hops," "jumps," "shakes," "twitches," "trembles," "vibrates," and "wobbles." Each of these words conveys a slightly different nuance of movement, but all suggest a rapid, irregular motion. Depending on the context, other potential synonyms might include "convulses," "quivers," "jiggles," "wavers," or "shudders." Whether describing the movement of a car on a bumpy road or the erratic behavior of a person under stress, these synonyms can help add variety and precision to your writing.
