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