Knee jerk reaction

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Related to Knee jerk reaction: Knee jerk reflex immediate unthinking emotional reaction produced by an event or statement to which the reacting person is highly sensitive; - in persons with strong feelings on a topic, it may be very predictable.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Yates added: "There will be no knee jerk reaction to the Weymouth game.
Cuts that have been insufficiently researched and poorly considered and appear to be no more than a knee jerk reaction in a desperate attempt to fill a black hole that has been allowed to grow over some considerable period of time, despite increases in our council tax year on year and despite what was deemed an 'economic boom' period.
Local rock band Knee Jerk Reaction will take to the stage at 8.30pm on Saturday at the Forest Hall Ex-Servicemen's Club.