elopement

noun4

1. •
   The act of running away from home with a paramour.

   • You may not have heard of the last blow—Julia's elopement; she is gone to Scotland with Yates. — 1814
2. •
   The act of running away secretly for the purpose of getting married.
3. •
   The act of running away from home (for any reason).
4. •
   The act of a person with dementia or other mental illness wandering away from the area where they are safe.