Film Noir: The term originated in France during the 1940 s. In Francais, noir means dark, black, or murky; thus, Film Noir translates to Dark Cinema.
Film Noir: A type of crime film featuring cynical malevolent characters in a sleazy setting and an ominous atmosphere that is conveyed by shadowy photography and foreboding background music. (Merriam-Webster)
Film Noir: A style or genre of cinematographic film marked by a mood of pessimism, fatalism, and menace. The term was originally applied by a group of French critics to American thriller or detective films made by directors such as Orson Welles, Fritz Lang, and Billy Wilder. (Google)
Film Noir:
Film Noir: Man’s inhumanity illustrated by testing moral absolutes and limits of the most jaded, insidious, and manipulative characters, who are pitted against each other. (Tony Fuller)