The antonyms for "staying hidden" are "being visible," "standing out," and "appearing in the open." To be visible, one needs to be bold, confident and willing to take risks. They need to speak up, stand out and assert themselves confidently, and let their presence be noticed. To stand out, one needs to be unique, different and captivating. They need to showcase their talents, skills and personality to the world, and let their abilities shine through. To appear in the open, one needs to be open, transparent and sincere. They need to be truthful, honest and trustworthy, and let their actions and words speak for themselves.