Top definition
To react without thinking. To form an opinion without paying attention.
When he said he was a Republican, the college student's kneejerk reaction was to boo him.
by </time> September 14, 2003
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Oct 3 Word of the Day
I couldn’t care less (but one must keep up appearances, right?)
Frenemy has a family tragedy. "Thoughts and prayers."
by November 05, 2018
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2
A spontaneous, thoughless, predictable and stereotypical reaction to something, usually an opinion or a statement.
An entire culture of American neo-conservatives has seemed to build itself on a type of knee-jerk reaction to any kind of criticism of the Bush Administration or the loyal element of the Republican Party, even from fellow conservatives -- the kind of pseudo-patriotism discouraged by Theodore Roosevelt.
by LudwigVan November 10, 2003
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3
automatic, quick and without thought
Allergies are the immune system's knee-jerk defensive responses to unknown substances.
by Light joker January 14, 2007
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4
When a person responds or reacts due to past experiences or trauma without being mindful of the consequences of said response.
Her kneejerk response was to say she didn't believe in love...
by Bevrlykills January 02, 2020
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5
An orthopaedic surgeon who happens to also be an idiot, despite both the excellent training and higher than average IQ.
I'm glad that the Knee Guru replaced my knee, but he is a total knee jerk when it comes to bed-side manner.
by Quills13 January 22, 2011
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