Here's what rhymes with cortex.
                        
                        
                    
                                vortex  neocortex  Words that almost rhyme with cortex
complex  contents  contexts  contests  forceps  offsets  farces  portents  doorsteps  gauntlets  onsets  omelettes  gantlets  objects  concepts  comments  nonsense  compress  torments  armrests  novelettes  process  progress  projects  conquests  songfests  prospects  bolivares  reprocess