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