Here's what rhymes with cofounder.
founder sounder pounder flounder rounder bounder profounder grounder unsounder expounder Words that almost rhyme with cofounder
counter mounter encounter powder shower louder sour voucher chowder bouncer howler fouler downer shouter sourer power flower tower flour bower scour announcer dour cower prouder stouter browner doubter lounger dauber dowser pouter mouser schnauzer gouger scourer dourer flouter scouter sloucher trouncer frowsier browser devour overpower trouser glower prowler growler scrounger drowsier jouster grouser empower cornflour deflower embower superpower cauliflower waterpower thundershower