Related Clues:

• Letter following sigma
• The "t" in Crete?
• Improves, in a way
• Pericles' T
• Athenian cross
• Greek letter following sigma
• Cross at a frat
• Greek alphabet letter
• Greek character endlessly tense
• Tense before finishing letter from foreigner
• Associate of Phi Beta Kappa, say, cheers University
• Character having no slack cut
• What leads in the alphabet upsilon
• Letter seen in first half of sign
• Cross and tense when failing to finish