In Japanese, “杀伐” is pronounced as “satsubatsu”. The “sa” sound is like the “sa” in “sun”. “tsu” is a distinct sound which is a bit like a quick “ts” sound. “ba” is similar to the “ba” in “bat”. “tsu” again as explained before. This word might be used in certain contexts related to battle or violence. However, it's not a very commonly used word in everyday Japanese conversations. If you want to use words related to aggression or conflict, there are other more common expressions that might be more suitable.
