Here's what rhymes with relationistic.
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flyspeck mimic mythic lipstick lytic dipstick diptych nitpick critic civic lyric acidic picnic citric cryptic elliptic granitic physic satiric cynic lithic thymic gimmick triptych zoophytic sylphic specific scientific analytic clinic rhythmic terrific hemolytic acrylic ecliptic horrific idyllic limbic pacific rabbinic syphilitic arthritic empiric haemolytic honorific arrhythmic nephritic periwig pinprick philippic cenobitic intrinsic catalytic parasitic dendritic paralytic phenotypic hydrolytic impolitic neolithic porphyritic saprophytic juridic bromidic nonrhythmic apocalyptic extrinsic logarithmic monolithic prolific hemispheric hydrophilic proteolytic unscientific antiarrhythmic basophilic metaphysic organismic thrombolytic antisemitic megalithic patronymic unspecific bulimic hermaphroditic pantomimic encephalitic coenobitic psychoanalytic nonspecific electrolytic algorithmic eosinophilic fibrinolytic hieroglyphic nonscientific palaeolithic paleolithic transpacific polyclinic carboxylic cataclysmic stratospheric