Recanting
Recanting was the act of publicly denying a heretical belief or spurious statement one had formerly expressed.

Zefram Cochrane made a commencement address at Princeton University in which he claimed that cybernetic creatures from the future tried to stop his first warp flight, only to be thwarted by future Humans. He later recanted the statement, which nobody believed. ()

In 2369, Vedek Winn Adami declared that Keiko O'Brien had dishonored the Celestial Temple by speaking heresy contrary to the Bajoran religion in her classroom and that she must recant, lest consequences befall her. ()

Social sciences