backlash
//ˈbæk.læʃ//
Noun
backlashSingular
backlashesPlural
1
A strong and adverse reaction by a large number of people, especially to a social or political development.
The new policy sparked a backlash from the public.
2
The recoil or jarring motion of a mechanism, especially in machinery when gears or parts do not mesh properly.
The backlash in the gears caused the machine to vibrate.