overshare

From over- +‎ share.

overshare (third-person singular simple present overshares, present participle oversharing, simple past and past participle overshared)

1. To share too much or in excess
2. To offer inappropriate disclosure concerning one's personal life to others.
   • 2007, Carol Culver, Manderley Prep, page 25:

     "I've been told by certain people that I have a tendency to overshare with strangers. I hope I haven't bored you with the details of my life.

• undershare

• overhears