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