A person who examines, specif. one whose work is examining records, people, etc.
A cynical person
The definition of an analyst is a person who studies the elements of something, often breaking it down into smaller parts, to learn how the parts work together and what the nature is of the thing being studied.
A person who interrogates; questioner
Agnostic means a person who views the existence of ultimate truth as unknowable, particularly when it comes to the existence of God.
One, especially a detective, who investigates.
The definition of a skeptic is someone inclined to doubt or question rather than just believe matters that are generally accepted.
One who inquires or makes an inquisition, especially a questioner who is excessively rigorous or harsh.
One who inquires
Find another word for questioner. In this page you can discover 24 synonyms, antonyms, idiomatic expressions, and related words for questioner, like: examiner, cynic, analyst, quizzer, interrogator, interviewer, doubter, scoffer, agnostic, investigator and skeptic.