Here's what rhymes with metanephrogenic.
eugenic pyogenic allergenic splenic cryogenic neurogenic phrenic photogenic irenic telegenic antigenic pathogenic transgenic biogenic iatrogenic mutagenic psychogenic teratogenic androgenic hypoallergenic schizophrenic anthropogenic neurasthenic calisthenic carcinogenic hallucinogenic callisthenic Words that almost rhyme with metanephrogenic
pfennig academic epidemic systemic endemic polemic pandemic totemic leukaemic ischemic epistemic nonacademic technic benthic derrick poetic authentic acetic pelvic angelic ascetic esoteric ferric relic peptic allelic eutectic frenetic steric medic fetich lovesick pectic genetic energetic generic kinetic prophetic athletic diabetic majestic metric pathetic forensic mesenteric phonetic septic alphabetic aseptic centric cleric enteric hectic emetic psychedelic sceptic turmeric dietetic geodesic geodetic hermetic hysteric acerbic bathetic phrenetic domestic magnetic aesthetic synthetic symmetric apologetic cosmetic esthetic numeric apathetic diuretic obstetric prosthetic empathetic isomeric skeptic tartaric chimeric evangelic homiletic paramedic paraplegic polytechnic pyrotechnic splenetic gametic paregoric redbrick unauthentic electric sympathetic arithmetic anesthetic dialectic dielectric eccentric geometric asymmetric concentric eclectic epileptic parametric anaesthetic isometric phylogenetic barometric cybernetic ethnocentric monomeric photometric anorexic apoplectic dyslexic dyspeptic geocentric heliocentric inauthentic peripatetic anorectic antithetic diametric parenthetic unaesthetic unapologetic exegetic unesthetic copacetic dyslectic atmospheric antiseptic volumetric psychometric unsympathetic egocentric ferromagnetic kinesthetic neuroleptic ontogenetic alphanumeric anthropocentric ionospheric radiometric antipathetic cataleptic nonmagnetic thermometric narcoleptic telekinetic nonathletic psychokinetic cliometric econometric biosynthetic colorimetric geomagnetic isoelectric nonparametric paramagnetic nonelectric hydroelectric parasympathetic photoelectric photosynthetic antidiuretic pharmacokinetic piezoelectric stoichiometric trigonometric onomatopoetic electromagnetic