Here's what rhymes with opsonist.
Words that almost rhyme with opsonist
arsonist organist oftenest opposite communist consonant commonest populist botanist opulent oxalate oxidant rottenest dominant continent fortunate novelist obstinate nominate occupant columnist consulate formalist augustest prominent consequent coordinate ornament armament consummate biologist cognizant geologist monopolist apologist corpulent somnolent zoologist urologist ethologist gemologist uncommonest argument confident parliament unfortunate complement fraudulent psychologist bicarbonate proximate pathologist incontinent neurologist condiment ideologist anthologist congregant violoncellist gemmologist approximate predominant incompetent antioxidant apportionment protestant rearmament gynaecologist phrenologist contortionist cosmologist seismologist graphologist concomitant proportionate disarmament entomologist extortionate gynecologist embryologist futurologist escapologist anthropologist reapportionment musicologist bacteriologist parapsychologist anesthesiologist endocrinologist anaesthesiologist