Here's what rhymes with plausibily.
chilly chile chili billy chilli dilly really silly hilly lily villi willy filly shabbily gillie shrilly frilly pithily sketchily rockabilly slily patchily worthily meagrely sombrely tranquilly healthily lengthily waterlily stealthily unworthily unhealthily involuntarily Words that almost rhyme with plausibily
cheery dearie teary beery deary theory weary dreary wiry bleary miry leery smeary busy pity dearly dimly dizzy dinghy pithy bilge ditty jiffy picky piggy tinny bitchy bitty jimmy biddy biggie city nearly merely guilty pretty yearly chimney filthy guinea richly witty mini privy sickly sticky thickly thinly tricky dingy fitly giddy gypsy kingly milky prickly silky stiffly hippie silty tipsy filmy fishy kitty perigee pigmy pygmy sissy austerely finny gimme hippy kiddie ninny pinky primly shitty whinny dinky drizzly fizzy jitney middy pimply pinkie pixie prissy shimmy shinny trimly clearly simply fifty quickly kidney severely sincerely fiercely risky singly whiskey briskly grimly misty princely whisky windy skinny glibly grisly gritty grizzly mitre stingy stringy bristly kinky limply lucidly nimbly shifty smithy spindly springy whimsy wispy frizzy nifty pigsty quickie solidi weirdly clingy fifthly fluidly horridly rabidly squishy stinky swimmingly transitively twisty wimpy committee sixty strictly swiftly flimsy thrifty wintry feverishly colicky crisply crudity elastically flinty intercity skimpy crispy deviltry frisky menisci crinkly glitzy luridly slinky distinctly sophistry subcommittee fixedly ignominy languidly reentry sacristy synonymy cavalierly crushingly insincerely succinctly unblushingly indecisively indistinctly propinquity