More low-down refers to something that is even more despicable or scandalous than what was previously known. However, the antonyms for this term can be "respectable", "honourable", or "upright". These words indicate that the subject is morally or socially acceptable, and they are opposite of low-down that implies a certain level of depravity or shamelessness in behaviour. Additionally, synonyms for low-down could be "dirt", "gossip", or "rumours", so antonyms for these words would be "truth", "news", or "information". In summary, using antonyms such as respectable or upright can help to promote a more positive and ethical view of an individual or situation rather than sensationalizing with low-down information.