Related Clues:

• Not balmy
• 'Compos mentis'
• Perfectly clear
• Healthy-minded
• Undeserving of a padded cell
• Right upstairs?
• Not cracked
• On one's trolley?
• Psychiatrist's determination, perhaps
• Capable of standing trial
• Readily comprehended
• Not bananas, nuts or crackers
• Grounded
• Easily understandable
• Not looney-tunes