Simple Definition of hacker

from our Learner's Dictionary

hacker

noun

plural hackers
1
computers : a person who secretly gets access to a computer system in order to get information, cause damage, etc. : a person who hacks into a computer system
2
US, informal : a person who plays a sport badly
My friends and I have been playing golf for years, but we're still just a bunch of hackers.
a tennis hacker

Cite this Entry

“Hacker.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/hacker. Accessed 22 Jun. 2026.

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