Pronunciation: (mis'chif),[key] —n. 1. conduct or activity that playfully causes petty annoyance.
2. a tendency or disposition to tease, vex, or annoy.
3. a vexatious or annoying action.
4. harm or trouble, esp. as a result of an agent or cause.
5. an injury or evil caused by a person or other agent or cause.
6. a cause or source of harm, evil, or annoyance.
7. the devil.