Here's what rhymes with gummary.
summary mummery Words that almost rhyme with gummary
gunnery nunnery utterly cutlery buttery rubbery scullery luxury drudgery motherly shrubbery southerly trumpery colorfully discovery adultery brotherly upwardly blustery compulsory stubbornly effrontery trustworthy perfunctory bloodthirsty introductory untrustworthy