The act of doing dick moves to your friends or anybody else.

Doing something to a player (in a video game) that he/she cannot get out of through means provided by the game's design.

This does not involve emotional things, such as butthurt, as they are psychological issues that are brought up by the individuals themselves and can be caused by anything.

Camping and ganking are often considered griefing by ignorant people and also are called grieifing by thin skinned people who cannot deal with what is involved in playing a particular game or ruleset provided by a game.

The action of causing someone grief in a video game.
Common in Call of Duty, Minecraft and a few other video games.
In minecraft it is using hacks to destroy something that someone has made, or just use hacks to kill them.
In COD it's using stuff like fly, forcefield, aimbot and ESPs.
Do not attempt griefing in real life, you may get hurt by the person you are griefing.

(in video games) action of having destroyed, constructed, etc., for the purpose of irritating someone or making someone angry

1. Purposefully shooting or otherwise sabotaging your teammates in an online game.

2. In online gaming where one repeatedly killing the same individual or individuals over and over again, or camping their corpse to prevent them from retrieving it, or otherwise performing actions in a game to prevent the player from enjoying the game.

3. In online gaming, someone who takes pleasure in creating grief for an opponent via various "cheap" tactics.

1. A profound mental anguish that one feels when one loses a loved one. Often accompanied with feelings of sorrow, regret, anger, guilt, and feeling very lonely.

2. An annoyance, frustration or difficulty.

to trouble, cause problems, or otherwise harass.

when you feel so helpless and stupid that you think nothing will ever be right again, and your macaroni and cheese tastes like sawdust, and you can't even jerk off because it seems like too much trouble.

Griefing has many different types, and occurs in many different games.

General Griefing:

1: Training, or angering hostile mobs to chase you at another player. This is named because the chain of mobs looks like a train.

2: Camping, or killing a player, then killing them again at their point of death or the spawn.

3: PVP stalking, or stalking a player and continuing to kill them. This is similar to camping, but occurs with the same player for a long period of time.

4: Chat spamming, or adding random text or profanity into the chat.

Specific Griefing:

Sandbox Games

5: Spleefing. This is very annoying if this occurs outside a designated spleef arena.

6: Walls. Self-explanatory, but must be constructed out of a high-level material that cannot be easily destroyed. This is also used to defend against griefers.

7: Encasement in walls. Normal walls, but surrounding a player so s/he can't get out.

FPS games

8: Sniping. This is normally not griefing, but is a form of the PVP stalker.

Targets for Griefers:

1. Minecraft. This game is a sandbox game, and is easily griefed. This game is particularly good for griefing as almost-indestructible structures can be built out of obsidian and used for walling and encasement.

2. World of Warcraft. This game is very popular, and thus griefed often.

3. Terraria. This game is very similar to Minecraft, as both were based off the game Infiniminer, and thus is griefed in very similar ways.