One word for human being ends with O

DESPERADO  :someone who willingly does risky, dangerous and often
criminal things:

ESKIMO     : a member of one of the Native American tribes who live in
the very cold northern areas of North America, Russia and Greenland

GIGALO     :

MAESTRO    : a man who is very skilled at playing or conducting (=
directing the performance of) music.

MEDICO     :

MULATTO    :an offensive word for someone with one black parent and
one white parent.

NIGRO      :

SPADO      :

TIRO       :

TYRO       :a person who is new to an activity:

YAHOO      : a rude, loud and unpleasant person, especially one who
lacks education.