Here's what rhymes with cigenfunction.
function dysfunction junction injunction disjunction malfunction conjunction compunction Words that almost rhyme with cigenfunction
suction sunken induction shrunken fuckin someone instruction sudden deduction drunken summon emulsion seduction sullen sultan tungsten avulsion irruption impulsion kuchen production discussion assumption destruction reduction button corruption cousin dozen conduction disruption eruption expulsion interruption abduction dungeon luncheon mutton convulsion muslin revulsion transduction exciton huntsman subduction yeomen gulden gunman muffin coven dudgeon gumption liposuction toughen bunion dustpan lumpen mullion piton roughen scullion scutcheon dustman nubbin dubbin construction consumption introduction obstruction presumption compulsion percussion repulsion resumption concussion perdition propulsion globin bludgeon escutcheon glutton unbutton decagon stuntman grunion biathlon reproduction combustion androgen deconstruction overproduction reconstruction semicolon reintroduction repercussion misconstruction caparison bellybutton ragamuffin underproduction