Here's what rhymes with synonymical.
inimical Words that almost rhyme with synonymical
cynical finical rabbinical preclinical physical mystical lyrical rhythmical whimsical nonphysical arrhythmical critical empirical analytical atypical umbilical uncritical tricycle untypical noncritical noncriminal elliptical encyclical subliminal nonpolitical unpolitical metaphysical logistical apolitical impermissible sophistical archetypical egoistical overcritical statistical cylindrical indivisible hypocritical sociopolitical egotistical psychoanalytical supercritical parasitical hypercritical geopolitical stereotypical prototypical