IPA: /kəˈrʌpt/
KK: /kəˈrʌpt/
To change from good to bad in morals, integrity, or virtue; to become dishonest or unethical.
The once honest politician began to corrupt after gaining power.
Past: corrupted
Past Participle: corrupted
Corrupt is formed from "cor-" (meaning together or with) and "rumpere" (meaning to break). The word originally described something that is broken or damaged in a moral sense, indicating a state of being morally compromised or degraded.
Think of something that is 'broken' ('rumpere') in a moral way when it is 'together' ('cor-') with bad influences — that's why corrupt means to be morally compromised.