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