Related Clues:

• Clear as day
• Clearly expressed
• Sound made by swans and nesting eagles at first
• Not loony
• It's sound, mind, and I'm just sayin' it as it is
• Mentally together
• Have all the faculties backing university in touch with police
• Mentally with it
• Mentally stable
• Sound in one's head
• All there in the head
• Expressed clearly
• Thinking clearly
• Not wacko
• "Compos mentis"