untrain
/ˈʌnˌtreɪn/Definitions
1. verb
to remove training or habit from an animal, especially by depriving it of the stimulus that caused the habit
“The dog had to be untrained from pulling on the leash.”
2. verb
to remove a train from its rails, especially so that it can be taken into a siding or a repair shop
“The train was untrained before it could be sent to the repair shop.”
3. verb
to remove the train of an argument or a series of events from its usual or expected course
“The politician’s words were carefully chosen to untrain the audience’s expectations about the economy.”
4. noun
an act or process of removing training or habit from an animal, especially by depriving it of the stimulus that caused the habit
“The untraining of the dog took several weeks and a lot of patience.”