People always have a knee jerk reaction to them and want those lines out.
Stop with the knee jerk, blind defense of your own side—regardless of which that may be.
We see excellent examples of cerebral facilitation and inhibition in the case of the knee jerk.
Reflex action persists; the knee jerk is diminished, pointing to relaxation in tone of the muscles; consciousness is suspended.
For all that, the cerebrum can exert an influence on the knee jerk.
Cross the knee to be stimulated over the other leg, and tap the tendon just below the knee cap, and the knee jerk appears.
Anxious attention to the knee jerk inhibits it; gritting the teeth or clenching the fist reinforces it.
patellar reflex, neurological phenomenon discovered and named 1876; the figurative use appeared soon after the phrase was coined.
knee jerk n.
See patellar reflex.
: one more gesture to the knee-jerk hawks in the Congress/ Yet McDonald is no mere knee-jerk critic of the evangelicals
: We need less kneejerking on both sides in these arguments about the environment (1980s+)
[fr the patellar reflex, described as knee jerk by 1876]