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