verb (used with object), as·sas·si·nat·ed, as·sas·si·nat·ing.
- to kill suddenly or secretively, especially a politically prominent person; murder premeditatedly and treacherously.
- to destroy or harm treacherously and viciously: to assassinate a person’s character.
- to murder (a person, esp a public or political figure), usually by a surprise attack
- to ruin or harm (a person’s reputation, etc) by slander
c.1600, noun of action from(v.).
1610s, from past participle stem of Medieval Latin assassinare (see ). Of reputations, characters, etc., from 1620s. Related: Assassinated; assassinating.