What is Integrity?

Legal Definition
Integrity is the quality of being honest and having strong moral principles; moral uprightness. It is generally a personal choice to hold oneself to consistent moral and ethical standards.

In ethics, integrity is regarded by many people as the honesty and truthfulness or accuracy of one's actions. Integrity can stand in opposition to hypocrisy, in that judging with the standards of integrity involves regarding internal consistency as a virtue, and suggests that parties holding within themselves apparently conflicting values should account for the discrepancy or alter their beliefs. The word integrity evolved from the Latin adjective integer, meaning whole or complete. In this context, integrity is the inner sense of "wholeness" deriving from qualities such as honesty and consistency of character. As such, one may judge that others "have integrity" to the extent that they act according to the values, beliefs and principles they claim to hold.

Significant attention is given to the subject of integrity in law and the conception of law in 20th century philosophy of law and jurisprudence centering in part on the research of Ronald Dworkin as studied in his book Law's Empire. Dworkin's position on integrity in law reinforces the conception of justice viewed as fairness.

A value system's abstraction depth and range of applicable interaction may also function as significant factors in identifying integrity due to their congruence or lack of congruence with observation. A value system may evolve in a while, while retaining integrity if those who espouse the values account for and resolve inconsistencies.
-- Wikipedia
Legal Definition
As occasionally used in statutes prescribing the qualifications of public officers, trustees, etc., this term means soundness of moral principle and character, as shown by one person dealing with others in the making and performance of contracts, and fidelity and honesty in the discharge of trusts; it is synonymous with "probity," "honesty," and "uprightness." In re Bau-quier's Estate, 88 Cal. 302, 26 Pac. 178; In re Gordon's Estate, 142 Cal. 125, 75 Pac. 672.
-- Black's Law Dictionary