Related Clues:

• Minute amount
• Slight amount
• Least bit
• Theta-kappa go-between
• Itty-bitty bit
• Greek vowel
• Modicum
• Minimal amount
• Ninth letter in old Athens
• Jot or tittle
• Particle
• Miniscule amount
• Tiny little bit
• Greek I
• Teeniest Greek letter?