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