as·sas·si·nate 
/əˈsæsəˌneɪt/ verb
as·sas·si·nates; as·sas·si·nat·ed; as·sas·si·nat·ing /əˈsæsəˌneɪt/ verb [+ obj] : to kill (someone, such as a famous or important person) usually for political reasons
▪ They discovered a secret plot/plan to assassinate the governor. ▪ President John F. Kennedy was assassinated in 1963.
▪ They discovered a secret plot/plan to assassinate the governor. ▪ President John F. Kennedy was assassinated in 1963.
— as·sas·si·na·tion /əˌsæsəˈneɪʃən/ noun, plural as·sas·si·na·tions
[count] ▪ an attempted assassination of the President [noncount] ▪ a leader whose life was tragically cut short by assassination
/əˌsæsəˈneɪʃən/ noun, plural as·sas·si·na·tions [count] ▪ an attempted assassination of the President [noncount] ▪ a leader whose life was tragically cut short by assassination
