1jerk 
/ˈʤɚk/ noun
plural jerks /ˈʤɚk/ noun [count] 1 informal : a stupid person or a person who is not well-liked or who treats other people badly
▪ That jerk can't do anything right. ▪ Most of the kids are nice, but some are jerks. 2 a : a quick pull or twist
▪ The dead branch came loose after a few jerks. ▪ He felt the jerk of the line as a fish took the bait. ▪ The door was stuck, but I gave it a jerk [=pulled on it very hard and very quickly] and it opened.
b : a sudden sharp movement
▪ The car started with a jerk.
▪ That jerk can't do anything right. ▪ Most of the kids are nice, but some are jerks.
▪ The dead branch came loose after a few jerks. ▪ He felt the jerk of the line as a fish took the bait. ▪ The door was stuck, but I gave it a jerk [=pulled on it very hard and very quickly] and it opened.
b : a sudden sharp movement
▪ The car started with a jerk.
