/ˈfrɪvələs dɪˈfɛns/ – noun
Definition: Lời biện hộ không đáng kể hoặc không chính đáng
A more thorough explanation: a defendant’s answer to the claim or charge made against him or her that has little chance of success because it lacks merit in law andor fact
Example: There is no evidence in the record to support this frivolous defence.