Possible Clues:

• Rush up to catch train starting to stop
• Discourage Morse creator missing dash dot dot dash?
• Discourage (an activity)
• Put off by the German and French inside
• Thus put off mine to make up my mind
• Discourage from doing something
• Prevent by instilling fear
• Resolve to put mine off thus
• Time inside does possibly frighten
• Put off portion of French potatoes