Here's what rhymes with nonpessimistic.
mystic pessimistic cystic sadistic chauvinistic sophistic artistic antagonistic holistic mechanistic statistic autistic ballistic logistic theistic animistic hedonistic impressionistic monistic shamanistic surrealistic euphemistic realistic optimistic stylistic unrealistic heuristic humanistic journalistic simplistic anachronistic dualistic socialistic synergistic atheistic egoistic fatalistic juristic legalistic novelistic patristic syllogistic egotistic voyeuristic aphoristic belletristic nepotistic linguistic deterministic idealistic materialistic monopolistic nationalistic naturalistic moralistic narcissistic opportunistic pluralistic rationalistic ritualistic communistic futuristic monotheistic pantheistic polycystic positivistic eulogistic expressionistic feudalistic inartistic jingoistic pugilistic casuistic puristic characteristic altruistic capitalistic paternalistic relativistic imperialistic militaristic polytheistic overoptimistic individualistic probabilistic oligopolistic universalistic cannibalistic uncharacteristic spiritualistic sociolinguistic Words that almost rhyme with nonpessimistic
flyspeck mimic mythic lipstick lytic dipstick diptych nitpick critic civic lyric acidic parasitic picnic citric cryptic elliptic granitic paralytic physic satiric syphilitic cynic lithic thymic gimmick triptych zoophytic sylphic specific scientific analytic clinic rhythmic terrific hemolytic acrylic dendritic ecliptic horrific idyllic limbic pacific rabbinic arthritic empiric haemolytic honorific antisemitic porphyritic arrhythmic nephritic periwig pinprick encephalitic philippic cenobitic intrinsic apocalyptic catalytic extrinsic phenotypic basophilic hydrolytic impolitic metaphysic neolithic patronymic saprophytic pantomimic juridic bromidic nonrhythmic monolithic nonspecific prolific hemispheric hydrophilic proteolytic unscientific antiarrhythmic organismic thrombolytic megalithic unspecific bulimic hermaphroditic nonscientific coenobitic psychoanalytic logarithmic electrolytic algorithmic eosinophilic fibrinolytic hieroglyphic palaeolithic paleolithic transpacific polyclinic carboxylic cataclysmic stratospheric