Suppose we have users and operators. Some users are assigned to certain operators. What should I call a procedure of removing an assignment, so an operator no longer works with a user or group of users? What are some antonyms for assign?
Divest comes to my mind:
(transitive) To strip, deprive, or dispossess (someone) of something (such as a right, passion, privilege, or prejudice).
You shall never divest me of my right to free speech.
So if the original procedure is:
Assign users to an operator.
The antonym is:
Divest an operator of users.
Consider using absign.
Why? Due to the morphology of assign:
Middle English, from Anglo-French assigner, from Latin assignare, from ad- + signare to mark, from signum mark, sign
The opposite of "ad" in Latin is "ab", and it's used in words such as "abstain", "absolve", "abdicate" etc. in English. So, replacing "ad" with "ab" gets you "absign".
Why not? I've not heard anybody else use it.