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