Final answer:
The word that does NOT use the prefix "ante" is antipathy.
Step-by-step explanation:
The word that does NOT use the prefix "ante" is antipathy. The prefix "ante" means "before" or "pre" and is commonly used to indicate something that comes before or precedes something else. In the case of the other three words, "anteroom" refers to a room that comes before or precedes another room, "antebellum" means "before the war", and "antecedent" means something that comes before or precedes something else. However, "antipathy" does not have the prefix "ante" and means a strong feeling of dislike or aversion towards someone or something.
Learn more about Prefixes in English words