Related Clues:

• Not easily taken
• James Bond villain
• Quite cautious
• Less than trustful
• Cautious taking route across river
• On one's guard where route crosses river
• In time of war youngsters have to be guarded
• Method is about right but be cautious
• Cautious with hostilities finishing early
• Means to imprison ringleader if suspicious
• Tired, lacking energy and showing caution
• Cautious fighting against unknown quantity
• Run into street? Careful!
• Run in manner that's suspicious
• Suspicious, and sarcastic about answer