TKer

TKer is short for "teamkiller", a common computer gaming phrase used to describe players who attack members of their own team instead of members of the opposing team. In the context of Urban Dead, it has been used to describe both survivor players who kill other survivors (PKers) and zombie players who kill other zombies (ZKers).

Alternatively, TKer can mean "Tree Killer" as in one who destroys christmas trees, which in Urban Dead, is an extremely heinous act, and is punishable by many groups (such as the DHPD) by death.

The term is rarely used, with "PKer" and "ZKer" being more common.