Here's what rhymes with conventical.
identical nonidentical Words that almost rhyme with conventical
helical heretical vesicle nonsensical testicle vesical technical theoretical spherical lexical poetical metrical unethical parenthetical angelical hermetical electrical symmetrical antithetical obstetrical nontechnical unsymmetrical dialectical evangelical geometrical hysterical alphabetical asymmetrical arithmetical ecumenical exegetical imperceptible indelible academical diametrical nonelectrical biomedical hemispherical extendible trigonometrical pyrotechnical incomprehensible infinitesimal petrochemical electrochemical