Botanist rhymes with:
neoplatonist, platonist, abolitionist, accompanist, antagonist, arsonist, calvinist, chauvinist, communist, conservationist, contortionist, determinist, exhibitionist, expressionist, feminist, illusionist, impressionist, isolationist, jansenist, neoplatonist, obstructionist, organist, perfectionist, platonist, protagonist, unionist