A player in an online multiplayer game whose goal is to be as absolutely obnoxious to other players, typically for teh lulz. This is traditionally actions such as team killing, team wounding, blocking, and spawn camping. Note that it is a misconception among a large part of the internet (particularly care bears, noobs, and nublets) that complaining to or about a griefer will deter them. In fact it is the opposite; this is the ultimate confirmation that they are annoying other players.
See: pwned.nl

"LEAVE! LEAVE BEFORE THE ADMIN BANS YOU!" - Konane

_____

"OMGGGG ADMIN BAN THE TKER!!!1!!111!!! HES A GRIEFER!1!!" - n00b who thinks there is an admin online
by Toluene October 28, 2010
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An individual who uses online games, instant messaging, e-mail, or any other communication method to harass, obstruct, or in some way make an experience sour for another person.
In IM (instant messaging) a griefer might keep sending spam messages to someone, knowing the messages will overload the other person's computer.

In an MMORPG, a griefer might run around a spawn location shooting newbies.

Someone who causes grief or a bad experience.
by Kally July 22, 2004
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The term for someone who destroys other peoples creations in Minecraft. Often piss people off and have been banned multiple times. A famous league of griefers is Team Avolition. Many people are Avo wanna-be's, but they will never truly be as good at griefing as they are.
Example 1:
Steve: "What happened to my castle?"
Griefer: "I griefed you beotch!"
Server: "Griefer has been banned"

Example 2:
Steve: "Why must Avo grief us? Now there are so many wanna-be's"
Player 2: "I know man hours of work wasted by uncreative griefing"
by minecrafterlol April 26, 2011
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The absolute scum of all online communities.

Griefers are all the sadistic weirdos who can't seem to relax and enjoy life.

They spend most of there time delighting in violence, destruction, and pointless harassment all of which can be repaired by a moderator in under 30 seconds.

The only places where griefing is allowed or encouraged is backwater minecraft servers run by griefers to get there needless sadism out on each other.

The majority of griefers cry themselves to sleep at night knowing they are wasting the time doing nothing to nobody but themselves and that every trace of there rampages is erased in seconds and all memory of them forgotten.
Log-in: Griefer
Griefer :TTROOOLLLOLLLOLL XD I am teh hackzz!
Mod: >:(
Griefer: lol stupid mods are stupid Imma break your house :P :P :P :P
Mod: -.- are you really that stupid?
Griefer: Your house is on fire azzhole beter plt it out. Can i haz diamonds plox plox plox?
Mod: /ban Griefer
Log-out: Griefer
Mod: /rollback blocks Griefer 1D
Server: all damage repaired

Griefer: *cuts self and cries*
by Blarny July 24, 2012
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This word is one seemingly created from the ether by Bill Gates minions to describe people who haven't completed puberty but have had considerable access to FPS games. Apparently it's common and parents should look out for it?
"Griefers" are the Internet equivalent of playground bullies, who find fun in embarrassing and pushing around others.
©2005 Microsoft Corporation.
by knock February 17, 2005
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In online gaming, someone who purposely seeks to annoy the other players, especially his own teammates. Usually a griefer is someone who is not good at the game, has a poor internet connection and wants to vent frustration.
"This server is nothing but a bunch of griefer TK's. Let's go somewhere else."
by PecosBill May 23, 2003
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Griefers are users in multiplayer video games that try to ruin other players' days, whether that be by abusing the game's mechanics or spamming in the chat.

If you run into a griefer in-game, simply ignore them. What griefers want is to get a reaction out of the people they're playing with, so in order to dilute their annoyance simply don't give them any reaction. You could also try and act smarter than them if they are chat griefing, though this may backfire. Generally griefers are just a worse version of noobs/n00bs, that instead of just being annoying actually ruin things.
Griefer griefing in-game:
*Griefer destroys structure made by good player*
Griefer: L0L u N0Ob
*good player says nothing*
*griefer teamkills good player*
Good Player: Wow! Nice kill!

Griefer chat griefing:
Griefer: U AL1 aRE ScuR85 xDDdDdDDd
Good Player: okay ;)
Griefer: L0L ScurBbbBbbbBb ;;;;;))))
Good Player: So Good Player 2 how's your day been?
by J. Kashmir June 30, 2015
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