Rushing

From Guild Wars Wiki

Rushing involves players doing something hastily. It can refer to several different situations. For example, one player leading a lower level group through a mission, so that the lower level players finish the mission faster (compare running). It is also used for groups trying to finish a mission very quickly (without waiting for AFK players) to achieve Master's Reward in timed missions. In PvP, you can also rush the enemy guild lord/priest, hoping to bring him down quickly before the other side can react.

Rushing can also be a negative term in PvE, when one character pulls aggro on a group of enemies before the main party is ready. For example, a warrior who moves to attack before the rest of the group has regained health and energy might be told to "stop rushing".