jerk (noun) jerk: a lurching move
Sinonime: autogenetic,
habitual,
impulsive,
instinctive, instinctual,
intuitive, involuntary, knee-jerk, mechanical,
natural,
perfunctory, reflex, routine,
spontaneous,
unconscious, unforced,
unintentional, unmeditated, unthinking, unwilled
Antonime: thought-out