Crossword Clue:

SPECTROSCOPIST one who uses a spectroscope

AnswerCrossword Clue
TATTOOEROne who uses a threadless needle
IRONISTOne who uses words in ways opposite of their literal meaning
DOPERAthlete who uses steroids
LEGMANReporter who uses shoe leather
WILEEToon who uses his middle initial
ORALISTDeaf person who uses speech and lip-reading
KTOSLINCountry singer who uses her first two initials
KARENOLead singer of rock's Yeah Yeah Yeahs (who uses just the initial of her last name)