There are various synonyms for the phrase "look down". Some of them include "scorn", "disdain", "disparage", "despise", and "belittle". All of these words showcase a negative connotation towards the subject in question. They all imply that the person being looked down upon is not valued, respected, or seen as an equal. These synonyms are often used in situations where one person feels superior to another, either in terms of status, intelligence, or wealth. While using these synonyms may make a person feel better about themselves, it is important to realize that they can cause harm and should be used with caution.