Which term describes someone characterized by high moral standards?

The term that best describes someone characterized by high moral standards is "integrity." This word refers to the quality of being honest and having strong ethical principles. A person with integrity is consistently fair, just, and trustworthy, reflecting their commitment to moral values in their actions and decisions.

The other terms differ significantly in meaning. "Disreputable" describes someone who is not respected or is regarded as having a bad reputation, which contrasts sharply with high moral standards. "Guile" refers to deceitfulness or cunning, indicating a lack of integrity or honesty. Lastly, "fathom" means to understand or comprehend, which does not relate to moral standards or character. Thus, "integrity" stands out as the most appropriate term for someone who upholds high moral values.