THESAURUS
consultant
Admirable Crichton, Dutch uncle, Polonius, adept, admonisher, adviser, advisor, artisan, artist, attache, authority, backseat driver, buttinsky, confidant, connaisseur, connoisseur, cordon bleu, counsel, counselor, crack shot, craftsman, dead shot, diplomat, diplomatist, doctor, elder statesman, experienced hand, expert, expert
consultant, graduate, guide, handy man, instructor, journeyman, kibitzer, marksman, meddler, mentor, monitor, nestor, no slouch, orienter, physician, politician, preceptist, pro, professional, professor, proficient, savant, shark, sharp, specialist, statesman, teacher, technical adviser, technician