Related Clues:

• 'It all comes clear'
• 'Oh'
• Picked up on
• Visionary's words
• Well-known
• 'Understood'
• Eminent
• Shrink rap?
• Indicated
• What a nod may mean
• 'Hmmm ...'
• ''Ah, gotcha!''
• 'Mm-hmm'
• Mentioned
• Chin-stroking phrase