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