Here are some examples of how "miffed" can be used:
* "I was miffed that she forgot my birthday."
* "He was miffed when she didn't invite him to the party."
* "She was miffed by his sarcastic comment."
"Miffed" is a more informal word than "annoyed" or "offended." It suggests a feeling of mild disappointment or irritation, but not necessarily a strong sense of anger.