/dɪˈfɛns ʌv ɪˌliˈɡæləti/ – noun
Definition: Bào chữa hành vi bất hợp pháp.
A more thorough explanation: an affirmative defence (=a claim which, if proved, defeats the claimant’s or prosecutor’s claim) that an agreement is unlawful or unenforceable under the law
Example: The Supreme Court came to the unanimous conclusion that Ms Honda’s complaint cannot be defeated by the defence of illegality.