A tactic used by some people to "have fun" ("fun" as defined by the griefer, not by most people). When a person griefs you, they repedeatly kill you, either to elicit change or just to annoy you. For example, if Alice kills Bob, then Bob might get mad and repeatedly kill Alice until Alice promises to never kill Bob again. Usually, this is just a waste of time, but sometimes people can get their point across. #Griefing is also: repeatedly killing a player who is unable to escape or defend themselves due to a lack of skill or ship configurations, and/or repeatedly attacking non-hostile people. This particularly annoys most people, but griefers can get away with it because they normally have superior ships and weapons. Griefing is very strongly frowned upon and is a good way to get lots of people mad at you.

Disrupting others gaming experience even though there is no reward for the griefer. (Thus the term "Griefing", causing grief to others)