The most egregious example would have to be in the season 2 finale where just about every variation of death and kill is used but the actual words: Destroy, annihilate, exterminate, eliminate, etc.
In their early stories, they yelled a number of words referring to death and destruction such as "kill", "destroy", and "annihilate", with exterminate becoming the most commonly used by their third story The Chase and the go-to phrase as the Daleks appeared thereafter.
Tomato in the Mirror: It turns out Hikari is a goddess of death come to exterminate all life on earth and Takeru is an Extended Definition born to kill her.