Related Clues:

• Informed about
• Perceptive
• Word with latch or catch
• Sound the tocsin
• Up on the latest
• Latch ___
• Hep
• Swinging joint?
• Suspicious of
• 'Hold ___ your hat!'
• Catch --- (start to get)
• Sign ___ (accept, as a program)
• Fully aware of
• On your toes
• Not unaware of