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