"Down ons" as a phrase does not exist in English language. However, "down on" is a commonly used phrase that means feeling low or being negative about something. There are various synonyms available for this phrase, such as feeling downhearted, dejected, disheartened, blue, low-spirited, glum, sad, depressed, demoralized, despondent, melancholic, and miserable. All these words indicate a negative emotional state, which can be caused by various factors such as rejection, failure, or loss. While these words do have similar meanings, they also have slight differences in their connotations, and choosing the right word depends on the context and the effect that one wants to convey.