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