Have you ever answered "no" when someone asked you if you were upset—even when you were fuming? If so, you just entered passive-aggressive territory.
When given a task they don't really want to do, a passive-aggressive person might appear to agree (sometimes even enthusiastically), but they won't fully comply with the request, Daniel K. Hall-Flavin, MD, explains to Mayo Clinic. Instead, he or she might express anger or resentment by failing to follow through or missing deadlines.