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