Here's what rhymes with foreknowledge.

Consider these alternatives

forewarning / morning knowlege / college omniscience / science disclaimed / range evasiveness / pervasiveness substantiation / operation omnipresence / presence intimation / information exactitude / food certitude / food intimated / dated disclaiming / training preconceived / received precluded / secluded inclination / information equivocation / information maybes / states negates / states hesitations / relations tampered / standard whatsoever / never compunctions / functions