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