re·cant 
(rĭ-kănt)
(rĭ-kănt)v. re·cant·ed, re·cant·ing, re·cants
v.tr.
To make a formal retraction or disavowal of (a statement or belief to which one has previously committed oneself).
v.intr.
To make a formal retraction or disavowal of a previously held statement or belief.
[Latin recantāre : re-, re- + cantāre, to sing, frequentative of canere; see kan- in the Appendix of Indo-European roots.]
re′can·tation (rē′kăn-tāshən) n.
re·canter n.