startle 1
noundomain: activity
Princeton WordNet [ver.3.1]
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EnglishDefinition
a sudden involuntary movement
Hypernym
reflex 1
noun
an automatic instinctive unlearned reaction to a stimulus
EnglishDerivationally related form
startle 2
verb
move or jump suddenly, as if in surprise or alarm
Hyponym
a complicated involuntary reaction to a sudden unexpected stimulus (especially a loud noise); involves flexion of most skeletal muscles and a variety of visceral reactions
startle reflex 1
noun
a normal reflex of young infants; a sudden loud noise causes the child to stretch out the arms and flex the legs
wince 2
noun
a reflex response to sudden pain
