asker
catechist
cross-interrogator
cross-questioner
detective
examiner
inquirer
inquisitionist
inquisitor
interlocutor
interpellator
interrogatrix
interviewer
opinion-sampler
poller
pollster
prober
querier
querist
questioner
questionist
quizzer
sampler
secret agent
enquirer
interrogate
interrogation
airman
communicators
engraver
groundling
investigator
negotiator
strategist
tagline
tarnsman
tormentor
wrestle