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