Related Clues:

• 'Hold ___ your hat!'
• Catch --- (start to get)
• Sign ___ (accept, as a program)
• Chance --- (meet accidentally)
• Fully aware of
• See 69-Across
• Fairy tale word
• Broadway's ''Once --- a Mattress''
• Not unaware of
• In the habit of
• Wise to
• "--- the Roof" (Drifters)
• "Once --- a time..."
• Conversant with
• Onto