unconsent
/ˌʌnˈkɒnsɛnt/Definitions
1. noun
the act or state of refusing or withholding consent, especially in a medical or legal context
“The patient’s unconsent to the procedure was due to a lack of understanding about the risks involved.”
2. verb
to refuse or withhold consent, especially in a medical or legal context
“The doctor had to unconsent the patient from the treatment due to a change in her medical condition.”