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