[ hak-er ]
/ ˈhæk ər /
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a person or thing that hacks.
Slang. a person who engages in an activity without talent or skill: weekend hackers on the golf course.
  1. a person who has a high level of skill in computer technology or programming; a computer expert or enthusiast: My brother is a real hacker—he fixed my laptop in no time.
  2. a person who circumvents security and breaks into a network, computer, file, etc., often, but not always, with malicious intent: A hacker got into my computer remotely and wiped my hard drive!The company has hired hackers to test system security.Compare black hat (def. 2), gray hat, white hat (def. 2).
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?

Origin of hacker

First recorded in 1200–50 for def. 1; Middle English (as surname); see hack1, -er1;1965–70 for def. 2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use hacker in a sentence

British Dictionary definitions for hacker

/ (ˈhækə) /

a person that hacks
slang a computer fanatic, esp one who through a personal computer breaks into the computer system of a company, government, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012