1. the quality or state of being irrelevant; lack of connection to the matter at hand
2. something that is irrelevant or not connected to the subject being discussed

Examples

• The lawyer objected to the irrelevancy of the witness’s testimony.
• His comments about the weather were an obvious irrelevancy during the budget meeting.
• The professor dismissed the student’s question as an irrelevancy to the main topic.
• She was frustrated by the irrelevancy of most job interview questions.
• The committee focused on key issues and avoided irrelevancies.
• The irrelevancy of his argument became clear as the debate continued.