1. the quality or state of being irritating; the capacity to cause irritation or annoyance
Usage: formal or technical usage; often used in legal or medical contexts
2. in law, the quality of being voidable or subject to cancellation
Usage: legal term; chiefly Scottish law

Examples

• The irritancy of the constant noise made it difficult to concentrate.
• The fabric's irritancy to sensitive skin prompted the manufacturer to reformulate it.
• Her irritancy with the slow service was evident in her tone.
• The irritancy of the contract clause led to its legal challenge.
• The medication's irritancy to the stomach lining required careful dosing.