There are many synonyms for the term "sexual interest," each with its own connotation and level of intensity. The most commonly used synonym is "desire," which suggests a strong longing for sexual intimacy. Another possibility is "attraction," which conveys a sense of being drawn to someone or something on a sexual level. Other synonyms include "lust," "craving," "passion," and "appetite," all of which imply a highly charged and urgent sexual need. In more formal or clinical contexts, terms such as "libido," "eroticism," or "sexual arousal" may be used to describe a person's sexual interest and behavior. Ultimately, the choice of synonym will depend on the context and intended meaning of the speaker or writer.