Related Clues:

• Upon
• Thought: Prefix
• Informed about
• Word with latch or catch
• Latch ___
• Hep
• Suspicious of
• Prefix with gram
• 'Hold ___ your hat!'
• Catch --- (start to get)
• Sign ___ (accept, as a program)
• Fully aware of
• Conceptual: Prefix
• Not unaware of
• Catch or latch follower