Synonyms for the phrase "reproached oneself" can include self-reproach, self-criticism, self-blame, self-condemnation, self-punishment, self-judgment, self-reproval, and self-chastisement. These terms all describe the act of blaming or criticizing oneself for a mistake, failure, or wrongdoing. While it is natural to feel remorseful and take responsibility for one's actions, excessive self-reproach can lead to negative consequences such as low self-esteem and even depression. It is important to strike a balance between acknowledging one's faults and moving forward with self-improvement and self-forgiveness.