Here's what rhymes with planktologist.
ecologist oncologist audiologist cytologist gerontologist mycologist penologist archaeologist radiologist cardiologist ethnologist meteorologist technologist dermatologist genealogist paleontologist palaeontologist hematologist histologist hydrologist ichthyologist sexologist virologist climatologist herpetologist petrologist haematologist numerologist urbanologist sociologist physiologist ophthalmologist criminologist microbiologist immunologist cosmetologist campanologist pharmacologist toxicologist epidemiologist Words that almost rhyme with planktologist
apologised anthologised colonist economist moralist pharmacist agronomist abortionist optometrist extortionist warbonnet competent inordinate anticommunist antiabortionist disproportionate