Sex-appeal is a term used to describe someone's attractiveness or desirability. However, there are numerous synonyms that could be used instead of sex-appeal. One synonym for sex-appeal is charm, which is the ability to attract and captivate others with one's personality or appearance. Another synonym for sex-appeal is allure, which refers to someone's power to attract or tempt others. Additionally, magnetism is another synonym that could be used to describe someone's sex-appeal. Lastly, seductiveness is another word that could be used to describe someone's sex-appeal, which refers to the power to seduce or attract someone sexually.