Unremember

For when you're so forgetful you manage to forget the very word to describe your inability to recall information

Bella: What's that word for when you unremember something?
Alex: … you mean forget?

Unremember by thebestginge December 9, 2019

Unmember 

In which a person forgets, or temporarily doesn't remember something.

John: Hey George, remember that awesome football game?
George: Sorry, but I unmembered that game.

Unmember by Svifias March 11, 2019

Undecember

The month between December and January in which the holiday spirit is worn off and all decorations are taken down.

The Grinch's favorite month is Undecember.

Undecember by #+_+# December 6, 2025