What is another word for "preceptor"?

Roget's Thesaurus (1911) lists these synonyms for "preceptor": abecedarian, adviser, apostle, bear, chalk, clergy, coach, crammer, dame, director, disciplinarian, dominie, don, dry, duenna, example, expositor, for, governess, governor, grinder, guide, guru, imitation, institutor, instructor, leader, lecturer, master, mentor, missionary, model, monitor, nurse, pastor, pedagogue, pioneer, preacher, prelector, professor.