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