untell

verb2

1. •
   To withdraw or retract (something told); to never have told.

   • Narrative untells itself by multiplying itself into discontinuous "turns" that cannot be resolved into a continuous story. — 1993
2. •
   (no longer used) To undo or reverse the counting of; to count back.

   • That Time could turn up his swift sandy glass, / To untell the days, and to redeem these hours. — 1607