adept, expert

GURU
WordClue
ACEguru, authority
PIPace
ADEPTguru, expert
EXPERTguru, cognoscente
MASTERguru, virtuoso
SCHOLARguru, proficient
AUTHORITYguru, adept
PROFICIENTguru, master
CONNOISSEURsubject-matter expert
KONRADAdenauer, German politician
ALLEGIANCEadherence, loyalty