"Gives the skinny on" typically means to provide information or details on a particular topic. However, if we were to look for antonyms to this phrase, we could consider "obscures the truth," "withholds information," or "muddies the waters." These phrases suggest a lack of transparency, either intentionally or unintentionally, and may imply a sense of dishonesty or deception. Alternatively, we could consider "glosses over," "sugarcoats," or "downplays," which suggest a deliberate attempt to soften or minimize the truth. While "gives the skinny on" implies a straightforward and honest approach to sharing information, its antonyms suggest a more complex and potentially problematic relationship with the truth.