Anti
WordNet
adjective
(1) Not in favor of (an action or proposal etc.)
noun
(2) A person who is opposed (to an action or policy or practice etc.)
"The antis smelled victory after a long battle"
WiktionaryText
Adjective
anti
- against, opposed to.
- I'm very anti that idea.
- Describing a torsion angle between 90° and 180°