Words That Rhyme With "Decorous" :
3 syllables:
acarus, eucharis, fetterless, generous, Hesperus, Icarus, ichorous, jeopardous, lecherous, leopardess, letterpress, liquorice, Megarus, nectarous, saccharose, treacherous, venturous, zephyrous
4 syllables:
adventuress, adventurous, congenerous, electorates, indecorous, obstreperous, ungenerous