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