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