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