Here's what rhymes with oncological.
logical illogical ecological ontological analogical zoological ethological gynaecological urological audiological biological psychological theological archaeological pathological chronological geological neurological genealogical mythological etiological archeological dialogical ethnological aetiological tautological horological ideological technological morphological histological pharmacological phonological astrological philological topological typological hydrological mineralogical serological terminological embryological gynecological ornithological musicological physiological sociological methodological eschatological immunological meteorological pedagogical phenomenological radiological teleological microbiological hematological toxicological dermatological haematological speleological epidemiological neuropsychological bacteriological psychophysiological biotechnological neurophysiological electrophysiological Words that almost rhyme with oncological
tropical prodigal periodical nontropical subtropical semitropical astronautical microscopical conical chronicle comical ironical rhetorical dropsical hospital economical categorical uneconomical historical philosophical astronomical metaphorical diabolical symbolical ahistorical unhistorical theosophical pocketsful paradoxical taxonomical gastronomical prehistorical