When you are treated unfairly at work and you complain to the Human Resources department, this is an example of airing a grievance.
Origin of grievance
- Middle English grevaunce from Old French grevance from grever to harm grieve
From American Heritage Dictionary of the English Language, 5th Edition
- Old French grievance, from the verb grever (“to irritate; to bother; to annoy”) + -ance.