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