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