apophatic (adj.) Look up apophatic at Dictionary.com
"involving a mention of something one feigns to deny; involving knowledge obtained by negation," 1850, from Greek apophatikos, from apophasis "denial, answer," from apophanai "to speak off," from apo- "off" (see apo-) + phanai "to speak," related to pheme "voice" (see fame (n.)).