misaddress

From mis- + address.

misaddress (third-person singular simple present misaddresses, present participle misaddressing, simple past and past participle misaddressed)

1. (transitive) To address (a letter, etc.) incorrectly.
   • 1970, Queen's Quarterly, volume 77, page 35:

     She had written it to him before she died, but had misaddressed it — and hence the postal delay.