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