a·poph·a·sis 
(ə-pŏfə-sĭs)
(ə-pŏfə-sĭs)n.
Allusion to something by denying that it will be mentioned, as in I will not bring up my opponent's questionable financial dealings.
[Late Latin, from Greek, from apophanai, to say no : apo-, apo- + phanai, to say; see bhā-2 in the Appendix of Indo-European roots.]