Antonyms for the phrase "makes a spectacle of" might include being humble, discreet, modest, unobtrusive, unremarkable, understated, or unseen. When someone makes a spectacle of themselves, they draw excessive attention to themselves, often in a negative way. Antonyms for this behavior would be to avoid drawing attention to oneself, to blend in, to be unassuming or subtle, and to exercise moderation and restraint. In many social settings, particularly in professional or formal contexts, it is generally considered more appropriate to avoid making a spectacle of oneself and instead to exhibit a more reserved and dignified demeanor.