Here's what rhymes with sympaticus.
Words that almost rhyme with sympaticus
daintiness tastiness pastiness patriots laziness haziness hastiness raciness shakiness spaciness radius spontaneous cutaneous salience craziness saintliness flakiness shadiness vagarious simultaneous radiance compatriots neighborliness salients ungainliness miscellaneous extraneous irradiance extemporaneous leisureliness bacchanalias gradients subcutaneous contemporaneous percutaneous