| ABORTIONIST | • abortionist n. (Now sometimes offensive) A person who performs abortions, especially illegally or secretly. • abortionist n. (Chiefly derogatory) A person who advocates for or supports the legality of abortion. • ABORTIONIST n. one who induces abortions. |
| ADOPTIONIST | • adoptionist n. (Christianity) One who believes in or supports adoptionism. • adoptionist n. (Uncommon) One who supports adoption. • adoptionist adj. Of or pertaining to adoptionism. |
| CREATIONIST | • creationist n. A proponent or supporter of creationism. • creationist adj. Of or relating to creationism. • CREATIONIST n. a believer in creationism. |
| DEVOTIONIST | • devotionist n. Alternative form of devotionalist. • DEVOTIONIST n. one who practises devotion. |
| FACTIONISTS | • factionists n. Plural of factionist. • FACTIONIST n. one who promotes faction. |
| FICTIONISTS | • fictionists n. Plural of fictionist. • FICTIONIST n. a writer of fiction. |
| MUTATIONIST | • mutationist n. One who believes in the theory of mutationism. • MUTATIONIST n. a believer in evolution by mutation. |
| NEGATIONIST | • negationist n. One who revises history in order to omit something that actually happened. • NEGATIONIST n. someone who merely denies, without offering any positive assertion. |
| PETITIONIST | • petitionist n. A petitioner; one who submits a petition. • PETITIONIST n. one who serves a petition. |
| PORTIONISTS | • portionists n. Plural of portionist. • PORTIONIST n. a postmaster of Merton College; one of two or more incumbents sharing a benefice. |
| QUESTIONIST | • questionist n. (Obsolete) A person preparing for, or taking, their final exam at university. • questionist n. (Obsolete) An inquisitive person, a questioner. • QUESTIONIST n. a questioner, a doubter. |
| REACTIONIST | • reactionist adj. Reactionary. • reactionist n. Reactionary. • REACTIONIST n. a reactionary. |
| RELATIONIST | • relationist n. A subscriber to relationism. • relationist n. (Obsolete) A relative; a relation. • RELATIONIST n. a believer in relationism. |
| SOLUTIONIST | • solutionist n. A solver of problems or puzzles. • SOLUTIONIST n. a solver, as of puzzles. |
| VACATIONIST | • vacationist n. Someone who is on vacation. • VACATIONIST n. one who takes a vacation, also VACATIONER. |