Anti

Anti can have multiple different meanings such as:

The prefix anti- means "the opposite of".
In particle physics, anti- refers to a particle with the same mass but opposite charges, an antiparticle.
In Egyptian mythology, Anti was the ferryman who carried Isis to Set's island.
Anti, or Campa, a tribe of South American Indians.
ANTI-, American record label.

See also: Ante, a bet in poker.