Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun reflex

1 sense of reflex

Sense 1
reflex, reflex response, reflex action, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction -- (an automatic instinctive unlearned reaction to a stimulus)
       => reaction, response -- (a bodily process occurring due to the effect of some antecedent stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age")

Antonyms of adj reflex

1 sense of reflex

Sense 1
automatic, reflex (prenominal), reflexive -- (without volition or conscious control; "the automatic shrinking of the pupils of the eye in strong light"; "a reflex knee jerk"; "sneezing is reflexive")

INDIRECT (VIA involuntary) -> voluntary -- (controlled by individual volition; "voluntary motions"; "voluntary muscles")

Similarity of adj reflex

1 sense of reflex

Sense 1
automatic, reflex (prenominal), reflexive -- (without volition or conscious control; "the automatic shrinking of the pupils of the eye in strong light"; "a reflex knee jerk"; "sneezing is reflexive")
       => involuntary (vs. voluntary) -- (controlled by the autonomic nervous system; without conscious control; "involuntary muscles"; "gave an involuntary start")