Here's what rhymes with semiplausible.
plausible implausible Words that almost rhyme with semiplausible
possible washable purchasable impossible probable laudable lockable horrible adorable watchable abdominal soluble nominal proximal improbable portable topical deplorable follicle forcible nautical chargeable inaudible voluble solvable fordable monocle chlorophyl coracle adoptable karakul remarkable marginal particle cardinal cortical anatomical affordable carnival conjugal constable methodical orthogonal apocryphal carbonyl torsional corpuscle farcical pronominal tetragonal barnacle resolvable supportable unsolvable unstoppable fontanel rechargeable rhapsodical equatable revolvable gemological enlargeable responsible proportional hierarchical canonical doctrinal insoluble phenomenal allegorical enforceable oratorical aeronautical cytological etymological insupportable unremarkable exportable entomological exhaustible scatological submarginal tortoiseshell importable seismological insolvable gemmological nonenforceable nonchargeable anthropological irresponsible inexhaustible unenforceable oligarchical transportable gerontological antiparticle cosmological epistemological disproportional phantasmagorical