probity

As nouns the difference between faithful and probity

is that faithful is the practicing members of a religion or followers of a cause while probity is integrity.

As an adjective faithful

is loyal; adhering firmly to person or cause.

As nouns the difference between probity and statesperson

is that probity is integrity while statesperson is a politician who is a leader in national or international affairs.

As nouns the difference between probity and improbity

is that probity is integrity while improbity is a lack of probity, honesty or integrity.