Third-person singular simple present indicative form of startle.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "startles" in a sentence
"He makes no answer, but his expression startles me."
"The broadest bridge is the Alexandre III Bridge in Paris, at least it looks the broadest, while the narrowest bridge, without a shadow of doubt, is the bridge that was built by ants in the moon; if the phrase startles you remember it is only in a novel by Wells."
"The minute lengthens into ten, and another call startles us."