startle
Americanverb (used with object)
verb (used without object)
noun
-
a sudden shock of surprise, alarm, or the like.
-
something that startles.
verb
Related Words
See shock 1.
Other Word Forms
- outstartle verb (used with object)
- startlement noun
- startler noun
Etymology
Origin of startle
First recorded before 1100; Middle English stertlen “to rush, caper,” equivalent to stert(en) “to begin, start” ( see start + -(e)len -le, or continuing Old English steartlian “to kick, struggle”
Explanation
To startle is to jump, like when you're surprised. If you’re sneaking through a dark room and step on a sleeping dog’s tail — you might startle the dog. If she barks, that dog startles you right back! A startle is a quick, sharp movement, like a little jump that happens when you’re surprised or suddenly scared. If you sneak up on your mom and say "Boo!" you’ll startle her and she might jump up in her seat (before she yells at you to quit it). Alarm clocks and barking dogs often startle people. The original meaning of startle, around 1300, was "to run back and forth," from the Old English word styrtan, "to leap up."
Vocabulary lists containing startle
"All Summer in a Day" by Ray Bradbury
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The Circuit
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"The Tragedy of Romeo and Juliet," Vocabulary from Act 5
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It triggers an automatic "startle response" to any loud noise.
From BBC • Apr. 9, 2026
Few people who have been on the national stage this long retain an ability to startle.
From The Wall Street Journal • Nov. 24, 2025
But when she sees another dog, everything changes: she snarls, barks loud enough to startle a city block, and lunges with so much force it takes all my strength to hold her back.
From Salon • Aug. 18, 2025
“I’m a triple Aries,” she says with pride, sensing that it might startle me.
From Los Angeles Times • May 21, 2024
He turned his head her way, and Sarai was so accustomed to her own acute nonbeing that it didn’t even startle her.
From "Strange the Dreamer" by Laini Taylor
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
