Reflex
/rˈiflɛks/
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Definition
(noun) An automatic response to a simple stimulus which does not require mental processing.
Sentence Examples
Thank you very much. Thank you for activating my gag reflex.
To me helping is a normal thing, a reflex, if you will, like breathing.
CEFR Practice Quiz
The doctor tested the patient's knee ____ by tapping it gently with a small rubber hammer.