knee-jerk definition, meaning - what is knee-jerk in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “knee-jerk”

knee-jerk

adjective uk   /ˈniː.dʒɜːk/  us   /-dʒɝːk/ disapproving
knee-jerk reaction, response, etc. a quick reaction that does not allow you time to consider something carefully
(Definition of knee-jerk from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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