1. a person or thing that annoys, frustrates, or troubles someone

Examples

• The constant noise from construction was a real vexer for the residents.
• My little brother can be such a vexer when he interrupts my homework.
• The malfunctioning printer became the office vexer.
• She identified the main vexer in the project as poor communication.
• Traffic jams are a daily vexer for commuters.