Low-lived is an adjective commonly used to describe someone who is uneducated, unrefined, and has no social standing. It can also refer to individuals of low moral character. Some synonyms for low-lived include uncultivated, uncouth, boorish, crude, gross, vulgar, and ignoble. Other words that closely relate to low-lived include despicable, contemptible, and base. The words low-down, mean, scummy, and sleazy are also synonyms for low-lived that have a more negative connotation. Overall, using any of these words to describe someone can be seen as insulting or derogatory, and it's essential to choose your words with care when referring to someone's character.