1
: one that hacks
2
: a person who is inexperienced or unskilled at a particular activity
a tennis hacker
3
: an expert at programming and solving problems with a computer
4
: a person who illegally gains access to and sometimes tampers with information in a computer system
Examples of hacker in a Sentence
My friends and I have been playing golf for years, but we're still just a bunch of hackers.
the company's security experts spent days trying to figure out how a hacker could have gotten past the firewall
Recent Examples on the Web
Moltbook has already been plagued with security issues, as the site itself is insecure, potentially allowing hackers to access private data.
—
Tharin Pillay, Time, 3 Feb. 2026
Shelvin said cybersecurity researchers have already found major vulnerabilities on Moltbook that could give hackers access to the digital lives of the humans running these bots.
—Hadas Gold, CNN Money, 3 Feb. 2026
Over the past year, security researchers have been warning that hackers are increasingly targeting the technology behind global shipping, quietly manipulating systems that move goods worth millions of dollars.
—Kurt Knutsson, FOXNews.com, 31 Jan. 2026
This grants hackers control over much of your device.
—Zak Doffman, Forbes.com, 30 Jan. 2026
See All Example Sentences for hacker
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Tharin Pillay, Time, 3 Feb. 2026
Shelvin said cybersecurity researchers have already found major vulnerabilities on Moltbook that could give hackers access to the digital lives of the humans running these bots.
—Hadas Gold, CNN Money, 3 Feb. 2026
Over the past year, security researchers have been warning that hackers are increasingly targeting the technology behind global shipping, quietly manipulating systems that move goods worth millions of dollars.
—Kurt Knutsson, FOXNews.com, 31 Jan. 2026
This grants hackers control over much of your device.
—Zak Doffman, Forbes.com, 30 Jan. 2026
See All Example Sentences for hacker
Cite this Entry
“Hacker.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hacker. Accessed 6 Feb. 2026.
Copy CitationKids Definition
hacker
noun
hack·er
ˈhak-ər 
1
: one that hacks
2
: a person who is unskilled at a particular activity
3
: an expert at programming and solving problems with a computer
4
: a person who illegally gains access to a computer system
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