The term "over sexed" refers to a situation where a person has an excessive or insatiable desire for sexual activity. Antonyms for this term can include prudish, asexual, uninterested, demure, chaste, abstinent, inhibited, modest, or celibate. These terms describe individuals who are not excessively interested in or compelled towards sexual activity. People who are prudish or demure tend to be more reserved and cautious about engaging in sexual activity, while asexual or uninterested individuals lack any sexual attraction or desire. Choosing the right antonym to describe individuals who do not have an excessive desire for sexual activity will depend on the context of the situation.