The meaning of a dream in which karate is prominently featured is somewhat variable though it often has a positive meaning as it implies that you will find impetus in order to continue something in your life.
If you dream that you are performing karate elements in your dream it signifies that in real life you will find great strength and perseverance to continue with your efforts of professional advancement. The more difficult the elements that you will perform in your dream, the greater the energy that you will find in real life.
Seeing a lot of karate fighters performing synchronized movements indicates that there will be harmony that will be quite welcomed in your personal life. This is especially true if this dream is recurring. Sometimes this dream can signify that you will overcome some difficulties in your life via the help of large number of friends and relatives.
Simply seeing a karateka (practitioner of karate) in your dream can sometimes signify that you will soon feel helpless due to your inability to solve some bothersome issue in your environment. A recurring dream of this nature can signify that you might need to change your approach towards people that are not friendly to you.
Seeing a female karateka signifies that very soon you will enter into an exhilarating adventure in your personal life. Sometimes this dream can signify that you will fall in love very rapidly in the next few days.
Seeing two karate fighters being engaged into a violent match signifies that things will get very dynamic in your personal life in a short time. If you are in a relationship you might need to do a lot of explaining to the other side.
To dream that you have won a karate match signifies that you will have a notable professional success which will largely be the result of your own discipline and dedication.