Merriam-Webster Collegiate Dictionary - corrupt

 I. verb  Etymology: Middle English, from Latin ~us, past participle of corrumpere, from com- + rumpere to break — more at reave  Date: 14th century  transitive verb  1.  a. to change from good to bad in morals, manners, or actions; also bribe  b. to degrade with unsound principles or moral values  2. rot, spoil  3. to subject (a person) to ~ion of blood  4. to alter from the original or correct form or version the file was ~ed  intransitive verb  1.  a. to become tainted or rotten  b. to become morally debased  2. to cause disintegration or ruin  Synonyms: see debase  • ~er also ~or noun  • ~ibility noun  • ~ible adjective  • ~ibly adverb  II. adjective  Etymology: Middle English, from Anglo-French or Latin; Anglo-French, from Latin ~us  Date: 14th century  1.  a. morally degenerate and perverted ; depraved  b. characterized by improper conduct (as bribery or the selling of favors) ~ judges  2. putrid, tainted  3. adulterated or debased by change from an original or correct condition a ~ version of the text  Synonyms: see vicious  • ~ly adverb  • ~ness noun