Related Clues:

• Prefix with physics or linguistics
• Prefix with ethics
• Social media website
• Prefix with fictional
• Physical leader?
• Trendily self-referential
• Physical beginning?
• Puzzle that unites several other puzzles
• Prefix with ''physical''
• Self-referencing
• Prefix meaning behind or beyond something
• Self-referential
• Prefix with analysis
• Self-referencing, as a work of art
• Like thinking about thinking