In the context of the movie "Unknown," the term "unknown" refers to the themes of identity, memory, and uncertainty. The protagonist, Dr. Martin Harris, finds himself in a situation where his identity is questioned, and he grapples with the loss of his past and the mystery surrounding his existence. The film explores what it means to be "unknown" not only in terms of personal identity but also in relation to trust, reality, and the search for truth in a world filled with deception and hidden agendas.

In the context of the movie "Unknown," a synonym for "unknown person" is "stranger." The film revolves around themes of identity and memory, as the protagonist is a man who wakes up after an accident to find that someone has assumed his identity, and he struggles to uncover the truth about who he is and the implications of being an unknown individual. This concept of anonymity is central to the film's tension and mystery.

"Unknown" is a 2011 thriller directed by Jaume Collet-Serra, starring Liam Neeson. The film follows a man who, after a car accident, discovers that someone has assumed his identity and that no one believes he is who he claims to be. The movie received mixed reviews, with praise for its suspenseful plot and Neeson's performance, but criticism for some predictable elements and pacing. While it may not be a cinematic masterpiece, it offers an engaging watch for fans of the thriller genre.

In the movie "Unknown," Liz, played by Diane Kruger, is a key character who helps Dr. Martin Harris, portrayed by Liam Neeson, after he loses his memory following a car accident. Throughout the film, it is revealed that Liz is not who she seems; she is actually an impostor posing as Martin's wife, while the real Liz's fate is left ambiguous. The story unfolds with suspense as Martin seeks to uncover the truth about his identity and the people around him, including the mysterious circumstances involving Liz.