antestipated 

to be frustrated while anticipating something

"Something did't work the way I had antestipated", says Spacebar

antestipated by The handle is't now blank September 24, 2019

Angstipated

1 - The feelings of angst that go with being constipated.

2 - An adjective used to describe people who are extremely uptight who behave as if they have not taken a shit in years.

"She eats so much bread, no wonder she is angstipated all the time"

"God, what an angstipated dickhead!"

Angstipated by Natalie Nix March 26, 2009