As nouns the difference between questioner and questionist
is that questioner is a person who asks questions, or who conducts an official enquiry while questionist is a person preparing for, or taking, their final exam at university.
questioner
English
Noun
(
en noun)
A person who asks questions, or who conducts an official enquiry
Synonyms
*inquirer
*inquisitor
*interrogator
questionist
English
Noun
(
en noun)
(obsolete) A person preparing for, or taking, their final exam at university.
(obsolete) An inquisitive person, a questioner.