Synonyms and related words :
Admirable Crichton, adept, artisan, artist, attache, authority, connaisseur, connoisseur, consultant, cordon bleu, crack shot, craftsman, dead shot, diplomat, diplomatist, elder statesman, experienced hand, expert, expert consultant, graduate, journeyman, marksman, no slouch, politician, pro, professional, professor, proficient, savant, shark, sharp, statesman, technical adviser, technician