Words That Rhyme With "Nincompoop" :
1 syllable:
coop, coupe, croup, droop, drupe, dupe, goop, group, hoop, houp, jupe, loop, loup, loupe, lupe, oop, poop, roop, roup, scoop, scroop, shoop, sloop, snoop, soup, stoop, stoup, stroop, stroup, stupe, swoop, troop, troupe, whoop