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