Dalek is a unique and iconic term that refers to a fictional race of extraterrestrial mutants in the British science fiction television programme Doctor Who. However, there are various synonyms that can be used to describe these creatures. Some of the common terms include Exterminate, Skaro, Kaled, Thal and Davros, which are all associated with Daleks in different ways. Additionally, terms like robotic, cyborg, and mechanized, can be used to describe the Daleks' appearance. With their distinct voice, tanks, and weaponry, the Daleks remain one of the most formidable creatures in the world of science fiction and continue to be a popular topic among Doctor Who fans.