untell
/ˌʌnˈtɛl/Definitions
1. verb
to refrain from telling or revealing something
“She chose to untell the secret to protect her friend’s feelings.”
2. verb
to be unable to tell or express something
“The patient was unable to untell the doctor the cause of his pain.”
3. noun
the act of refraining from telling or revealing something
“Her untell of the secret was admirable.”