Hadst bad is an archaic phrase that refers to negative actions or behavior. Some synonyms for this phrase include wicked, evil, immoral, sinful, depraved, corrupt, and malevolent. These words describe someone who has done something that is morally wrong or socially unacceptable. Another synonym is vicious, which describes someone who is cruel or violent. Other synonyms that can be used in different contexts include inappropriate, unacceptable, and objectionable. These words can help to convey the seriousness of someone's actions and highlight the negative impact they may have had on others. It is important to use appropriate language when describing negative behavior, and these synonyms can be helpful in achieving this.