Words That Rhyme With "Irradiant" :
3 syllables:
adient, audient, chadian, Fabian, gabion, gradient, mediant, radian, radiant, sapient
4 syllables:
Acadian, Akkadian, Arabian, arcadian, Barbadian, Canadian, circadian, expedient, gammadion, Grenadian, ingredient, obedient, Palladian, steradian, submediant, trilabiate