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
In fact, cybersecurity researchers are warning that hackers have started exploiting flaws in these chatbots to carry out AI phishing attacks.
—
Staff, FOXNews.com, 19 July 2025
Researchers from the Google Threat Intelligence Group said that hackers are compromising SonicWall Secure Mobile Access (SMA) appliances, which sit at the edge of enterprise networks and manage and secure access by mobile devices.
—Dan Goodin, ArsTechnica, 16 July 2025
The host then played a clip of a news anchor describing how a hacker had posted anti-semitic tweets on Elmo’s X account on Sunday.
—Emily Zemler, Rolling Stone, 15 July 2025
Sesame Workshop was trying to regain full control over its Elmo account on the X platform after a hacker gained access and posted a string of racist and antisemitic messages.
—Chicago Tribune, 15 July 2025
See All Example Sentences for hacker
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Staff, FOXNews.com, 19 July 2025
Researchers from the Google Threat Intelligence Group said that hackers are compromising SonicWall Secure Mobile Access (SMA) appliances, which sit at the edge of enterprise networks and manage and secure access by mobile devices.
—Dan Goodin, ArsTechnica, 16 July 2025
The host then played a clip of a news anchor describing how a hacker had posted anti-semitic tweets on Elmo’s X account on Sunday.
—Emily Zemler, Rolling Stone, 15 July 2025
Sesame Workshop was trying to regain full control over its Elmo account on the X platform after a hacker gained access and posted a string of racist and antisemitic messages.
—Chicago Tribune, 15 July 2025
See All Example Sentences for hacker
Cite this Entry
“Hacker.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hacker. Accessed 24 Jul. 2025.
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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