1. Definition: against, opposite
contra/conto
anti/ant
Definition: against, opposite

2. antiseptic
Definition: A substance that inhibits the growth and reproduction of disease- causing germs.
Sentence: My mom put antiseptic on the cut on my arm.

3. antipathy Definition: An opposition in feeling
Sentence: Steve’s best friend expressed antipathy about his love for the Chicago Cubs.

4. contradict Definition: To speak contrary or to oppose an idea
Sentence: The decision about eliminating recess at lunch contradicts school policy.

5. controversy Definition: A long dispute or debate about a topic
Sentence: There is controversy about whether or not students should have bigger lockers.

6. antibiotic Definition: A substance that stops the growth of germs
Sentence: George took an antibiotic to help him recover from the flu.

7. anticlimax
Definition: An event or ending that is far less important than originally thought.
Sentence: After playing outside, doing my homework was an anticlimax.

8. contrary Definition: Being the opposite one of two; in opposition
Sentence: Contrary to popular belief, the Cardinals were not the best National League team.

9. contravention
Definition: An action counter to something else…a violation
Sentence: His behavior at lunch was a contravention of the rules

10. contravene
Definition: To come or be in conflict with; to go or act against
Sentence: He contravened what the teacher told him to do.