If you or someone close to you is represented by the Knight of Swords, beware. It is symbolic of a forceful personality, one which combines zealous dedication to success with razor-sharp intellect. However, whether in the form of a companion or your own inner nature, these same attributes can give rise to a formidable enemy. When it refers instead to your circumstances, the Knight suggests you are headed for turbulent times, which can be most successfully faced with decisive action on your part.
To get the full traditional meaning and interpreation of Knight Of Swords, I suggest you visit Trusted Tarot and their Knight Of Swords page.