Crossword Clue:

OOLOGIST an expert in oology

AnswerCrossword Clue
EXCELATBe an expert in
MASTERBecome an expert in
MASTEREDBecame an expert in
MYTHOLOGISTAn expert in gods
ADEPTLYIn an expert way.
ADEPTLYIn an expert way
MOLOTOVHe's an expert in logomachy.
ARABISTExpert in an ancient language.
ENSIGNOFTHEZODIACNaval officer who's an expert in astrology?
SOCIALSTUDIES"I hang out with my friends all the time, so I must be an expert in ..."