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