Master

amo

(someone who has control over something or someone)

amo

(owner of an animal or slave)

amo

(courtesy title of a man)

capitán

(captain of a merchant ship)

joven amo

(courtesy title for a boy)

maese

(courtesy title of a man)

maestro

(expert at something)

maestro

(tradesman who is qualified to teach apprentices)

maestro

(original of a document or of a recording)

máster

(expert at something)

patrón

(someone who employs others)

señor

(courtesy title of a man)

señorito

(courtesy title for a boy)

troesma

(expert at something)

dominar

(to learn to a high degree)