| Noun | 1. | jerk - a dull stupid fatuous personmisfit - someone unable to adapt to their circumstances | |
| 2. | jerk - an abrupt spasmodic movementmovement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility" | |
| 3. | jerk - (mechanics) the rate of change of velocitymechanics - the branch of physics concerned with the motion of bodies in a frame of reference rate - a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected" | |
| 4. | jerk - a sudden abrupt pullpull, pulling - the act of pulling; applying force to move something toward or with you; "the pull up the hill had him breathing harder"; "his strenuous pulling strained his back" | |
| Verb | 1. | jerk - pull, or move with a sudden movement; "He turned the handle and jerked the door open"draw, pull, force - cause to move along the ground by pulling; "draw a wagon"; "pull a sled" | |
| 2. | jerk - move with abrupt, seemingly uncontrolled motions; "The patient's legs were jerkings"twitch, jerk - make an uncontrolled, short, jerky motion; "his face is twitching" move - move so as to change position, perform a nontranslational motion; "He moved his hand slightly to the right" | |
| 3. | jerk - make an uncontrolled, short, jerky motion; "his face is twitching"fibrillate - make fine, irregular, rapid twitching movements; "His heart fibrillated and he died" jerk, twitch - move with abrupt, seemingly uncontrolled motions; "The patient's legs were jerkings" | |
| 4. | jerk - jump vertically, with legs stiff and back arched; "the yung filly bucked"move - move so as to change position, perform a nontranslational motion; "He moved his hand slightly to the right" | |
| 5. | jerk - throw or toss with a quick motion; "flick a piece of paper across the table"; "jerk his head"push, force - move with force, "He pushed the table into a corner" | |