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