Cathartic rhymes with:
aortic, acetic, acoustic, acrobatic, adriatic, aerobatic, aesthetic, agnostic, alphabetic, altruistic, amniotic, anachronistic, analytic, anesthetic, antagonistic, antarctic, antiballistic, antibiotic, antic, anticlimactic, antiseptic, aortic, apathetic, apocalyptic, apologetic, apoplectic, aquatic, arctic, aristocratic, arithmetic, aromatic, arthritic, artistic, ascetic, asiatic, asthmatic, astronautic, asymptomatic, atavistic, atheistic, athletic, atlantic, attic, austroasiatic, authentic, autistic, autocratic, automatic, axiomatic, ballistic, baltic, bankatlantic, bionetic, biotherapeutic, bittick, bombastic, bostic, bostick, bureaucratic, capitalistic, catalytic, caustic, celtic, chaotic, characteristic, charismatic, chauvinistic, chiropractic, chittick, christic, cinematic, citic, climactic, climatic, coloristic, coptic, cosmetic, critic, cryptic, cultic, cushitic, cystic, democratic, dendritic, despotic, deterministic, diabetic, diagnostic, diagrammatic, dialectic, diamagnetic, didactic, dietetic, diplomatic, diuretic, dogmatic, domestic, dramatic, drastic, drumstick, dualistic, dynastic, ecclesiastic, eclectic, ecliptic, ecstatic, elastic, electrolytic, electromagnetic, electrostatic, emblematic, emetic, empathetic, emphatic, energetic, enigmatic, enthusiastic, enzymatic, epigenetic, epigrammatic, epileptic, erotic, erratic, esthetic, euphemistic, evangelistic, exotic, expressionistic, extragalactic, fanatic, fantastic, fantastik, fatalistic, ferromagnetic, feudalistic, fiberoptic, fojtik, frantic, frenetic, furtick, futuristic, galactic, genetic, geomagnetic, geopolitic, gigantic, granitic, gymnastic, halophytic, hamitic, hanseatic, haverstick, hectic, hedonistic, helionetic, hellenistic, hemolytic, hentic, hepatic, heretic, hermaphroditic, hettick, heuristic, hippocratic, holistic, homeostatic, homiletic, humanistic, hyperkinetic, hypnotic, iconoclastic, idealistic, idiomatic, idiosyncratic, idiotic, imperialistic, impressionistic, individualistic, inelastic, informatic, intermagnetic, interscholastic, jelisic, jingoistic, journalistic, kinesthetic, kinetic, klezmatic, knotek, kostic, kostick, lactic, legalistic, linguistic, logistic, lymphatic, magnetic, majestic, masochistic, materialistic, mathematic, matic, mattick, mcclintic, mcclintick, mechanistic, melodramatic, midlantic, miletich, militaristic, mistic, monastic, monochromatic, monopolistic, moralistic, mostek, mystic, narcissistic, narcotic, natick, nationalistic, naturalistic, neritic, neurotic, novelistic, numismatic, oligopolistic, onomastic, operatic, opportunistic, optic, optimistic, orthodontic, palmitic, pancreatic, pantheistic, paralytic, paramagnetic, parasitic, parasympathetic, parthenogenetic, paternalistic, pathetic, patriotic, patristic, pectic, pedantic, peptic, peripatetic, pessimistic, pharmakinetic, phlegmatic, phonetic, phosphatic, plastic, pluralistic, pneumatic, poetic, polytheistic, porphyritic, posttraumatic, pragmatic, primitivistic, prismatic, problematic, programmatic, propagandistic, prophetic, prophylactic, prostatic, prosthetic, psychoanalytic, psychosomatic, psychotherapeutic, psychotic, pugilistic, puristic, quixotic, realistic, reifsteck, relativistic, rheumatic, ritualistic, robotic, romantic, rustic, sadistic, sarcastic, schematic, scholastic, semantic, semiautomatic, semiotic, semitic, sensationalistic, sensormatic, septic, sertich, simplistic, sistek, skeptic, socialistic, socratic, soditic, stalinistic, static, statistic, stochastic, stylistic, supercalifragilistic, surrealistic, swantek, swatek, sycophantic, symbiotic, sympathetic, symptomatic, synergetic, synergistic, synoptic, synthetic, systematic, tactic, technocratic, telematic, terroristic, thematic, theocratic, therapeutic, thermoplastic, thrombolytic, transatlantic, traumatic, triptych, unapologetic, unauthentic, uncharacteristic, undemocratic, undiplomatic, unenthusiastic, unpatriotic, unrealistic, unsympathetic, voyeuristic, voytek, zientek, zitek