Master

maestro

(main, principal or predominant)

mastro

(original)

boss

(someone who employs others)

capitano

(captain of a merchant ship)

capo

(someone who employs others)

comandante

(captain of a merchant ship)

maestro

(expert at something)

maestro

(tradesman who is qualified to teach apprentices)

maestro

(skilled artist)

master

(original of a document or of a recording)

master

(engineering: device that is controlling other devices or is an authoritative source)

mastro

(courtesy title of a man)

originale

(original of a document or of a recording)

padrona

(owner of an animal or slave)

padrone

(someone who has control over something or someone)

padrone

(owner of an animal or slave)

padrone

(expert at something)

principale

(person holding a similar office in other civic societies)

proprietario

(owner of an animal or slave)

titolare

(someone who employs others)

padroneggiare

(to control)