Phi Kappa is a fraternity that was founded in 1868 at the University of Virginia. It is one of the oldest and largest fraternities in the United States, with over 200 chapters across the country. The two crossword solutions for Phi Kappa are BETA (4 letters) and TAU (3 letters). BETA is the second letter of the Greek alphabet and is often used to represent the fraternity's motto, 'Brothers in Unity'. TAU is the 19th letter of the Greek alphabet and is used to represent the fraternity's core values of truth, honor, and integrity.