Antonyms for the phrase "make oneself scarce" include phrases like "appear," "show up," "arrive," "present oneself," "come forward," "emerge," "surface," and "step forward." These antonyms indicate a willingness to be present, visible, and engaged. Whereas "make oneself scarce" indicates a desire to avoid confrontation, responsibility, or attention, these antonyms suggest the opposite approach. Instead of avoiding the situation, these antonyms point to a willingness to engage with it head-on. While there are times when it might be appropriate to "make oneself scarce," such as in a dangerous situation, in general, it is better to face challenges and engage with people and ideas.