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