There are various synonyms for the phrase "more brutality." Some of them include excessive violence, savage cruelty, ruthless punishment, severe oppression, and extreme savagery. More severe or harsh language can include phrases such as barbaric aggression, ferocious onslaught, or brutal assault. To convey an especially harsh sense of punishment or cruelty, words like sadism, torture or inhumanity can also be used. Using alternative synonyms allows for a more varied expression and can add a more emotive tone to your language. However, it is crucial to use these words appropriately and sensitively, considering their impact on the reader.