Here's what rhymes with pentoharbital.
suborbital Words that almost rhyme with pentoharbital
fordable portable affordable chargeable supportable exportable rechargeable importable nonchargeable enlargeable insupportable transportable volatile carbonyl farcical carnival follicle torsional barnacle coracle karakul marginal particle cardinal cortical hierarchical nominal topical nautical orthogonal corpuscle nonvolatile fontanel monocle axolotl chlorophyl proportional proximal doctrinal phenomenal conjugal methodical apocryphal pronominal oligarchical tortoiseshell abdominal canonical allegorical oratorical aeronautical tetragonal submarginal antiparticle disproportional rhapsodical gemological anatomical cosmological cytological entomological gerontological gemmological etymological scatological seismological phantasmagorical anthropological epistemological