Here's what rhymes with operacionis.
macaronis Words that almost rhyme with operacionis
gnomish wholeness nobis osmosis yogis raviolis closeness aerobics moroseness phobics stoics heroics narcosis prolix crochets biopics jocoseness osteoporosis alkalosis bowsprits trombonists tuberculosis atherosclerosis folklorists postscripts agoraphobics bobolinks saxophonists telephonists xylophonists vibraphonists endometriosis toxoplasmosis myxomatosis