The act of corrupting or of impairing integrity, virtue, or moral principle; the state of being corrupted or debased; loss of purity or integrity; depravity; wickedness; impurity; bribery.

Behavioural deviation from an accepted ethical standard.

dishonest and illegal behaviour

lack of integrity or honesty (especially susceptibility to bribery); use of a position of trust for dishonest gain

moral perversion; impairment of virtue and moral principles; "the luxury and corruption among the upper classes"; "moral degeneracy followed intellectual degeneration"; "its brothels; its opium parlors; its depravity"

destroying someone's (or some group's) honesty or loyalty; undermining moral integrity; "corruption of a minor"; "the big city's subversion of rural innocence"

inducement (as of a public official) by improper means (as bribery) to violate duty (as by commiting a felony); "he was held on charges of corruption and racketeering"

a positive development, as this kind of criticism in the official PA daily was unheard-of for many years

A form of misconduct or deviant behavior by police officers that involves the misuse of authority in a manner designed to produce personal gain for themselves or for others.

Corruption occurs when a person chooses to enrich him or herself at the expense of the general society by misusing his or her official position.

Dishonest or biased behaviour on the part of a government official or company employee.

In philosophical, theological, or moral discussions, corruption often refers to spiritual or moral impurity, or deviation from an ideal. Frequently, this takes the form of contrasting a pure spiritual form with a corrupted manifestation in the physical world. Many philosophers, in fact, have regarded the physical world as inevitably corrupt (Plato being the most famous example of this school of thought).