"Expiating" Natural Recordings by Native Speakers
Expiating refers to the act of making amends or paying the penalty for a wrongdoer's sin or wrongdoing, often in a formal or ritualistic manner. It can also describe the process of alleviating or purging oneself of guilt or shame resulting from a past mistake or wrong action.
Having a high level of knowledge, skill, or specialized training in a particular area, often to a superior degree of proficiency or proficiency that surpasses that of others.