IPA: /tɪˈrænɪˌsaɪd/
KK: /tɪˈrænɪˌsaɪd/
A person who kills a cruel and oppressive ruler.
The people celebrated the act of tyrannicide as a victory for freedom.
Tyrannicide → It is formed from "tyrannus" (from Greek "tyrannos", meaning tyrant) and "-cide" (from Latin "caedere", meaning to kill). The word refers to the act of killing a tyrant.
Think of a 'tyrant' ('tyrannus') being 'killed' ('-cide') — that's why tyrannicide means the act of killing a tyrant.