Assassin

[Sarah]

One who kills, or attempts to kill, by surprise or secretassault; one who treacherously murders any one unprepared fordefense.

[Sarah]

A person whose assignment is to kill. Typically, the person is paid to do the job well.

[Sarah]

A large game played over an extended period of time, usually by 10 or more people, and typically set in a college dorm. Players are secretly assigned the name of another player to assassinate, that is, squirt with a water gun when the target is not looking and when no one else may see the shot. When the target is assassinated, the assassin inherits the target of the deceased, thus closing the circle. The game continues until only one assassin remains.

[Michiko]

(Noun): a person who is hired to kill someone for money
(Noun): a person who kills someone because they dont like that person
(Proper Noun; Fiction(maybe): A member of an ancient order that is at constant war with [the Knights Templar], where the largest battles are highlighted by the game series [Assassins Creed].
!!!SPOILERS!!!
The first Assassins were Adam and Eve as reveiled [in The Truth]

[Monty]

A trained killer [hired] for money to kill other people.
Assassin is also a song by [the rock] band [Muse], it is probably the heaviest song on their new album

[Dave Paprocki]

A [hardcore] [ninja] that doesnt care for [all that] Natrutard crap.

[Sommer]

1. noun. [Assassins] were first referred to as Hashashins because they were given hashish and taken into a little garden slice of paradise. They were then told that if they died in their [lords] service they would automatically return in death to this paradise, and have a harem of women. This was eventually shortened to [assassins].
2. Adverb. To whoop some dudes ass with [Kungfu grip].