Congratulatory rhymes with:
ambulatory, articulatory, circulatory, deregulatory, oscillatory, regulatory, ambulatory, articulatory, circulatory, depilatory, deregulatory, dilatory, oscillatory, regulatory, revelatory
ambulatory, articulatory, circulatory, deregulatory, oscillatory, regulatory, ambulatory, articulatory, circulatory, depilatory, deregulatory, dilatory, oscillatory, regulatory, revelatory