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