Reflex

usgb/ˈriːfleks/
noun

An automatic reaction or response to something.

Touching a hot stove triggers an immediate reflex to pull your hand away.
Visual representation of "reflex" - An automatic reaction or response to something.

Often appears as...

  • reflex action
  • reflex response
Definition 1 of 4
Visual representation of "reflex"
LampPro Tip 1/3

Involuntary Action

Reflex refers to actions your body does automatically, without you deciding to do them.

Illustration for Involuntary Action
Knee-jerk is a common reflex test by doctors.
LampPro Tip 2/3

Not Deliberate

A reflex isn't controlled by conscious thought; it happens instinctively.

Illustration for Not Deliberate
Blinking when something approaches your eyes is a reflex.
LampPro Tip 3/3

Quick Response

Reflex actions are typically very fast, protecting us from harm.

Illustration for Quick Response
The reflex to cough instantly clears the throat.
Word comparison image

Compare with

automatichabitualinstinctiveinvoluntarymechanisticreactancespontaneousunthinking
Visual representation of the word "Reflex"

Never forget "Reflex"

Humans forget easily. That's why you should download WordUp: Smart reminders, word games, AI practice, and much more!

Download on the App StoreGet it on Google PlayGet it from MicrosoftGet it on AppGallery
Chrome

WordUp Chrome Extension

As you browse the web instantly look up words you don’t know.

Get Chrome Extension