Possible Clues:

• Central fund issues currency when confidence is lacking
• Not ascertain, not like that no doubt
• Not certain, doubtful
• Not a certain French ruse
• On shaky ground
• Not certain, somewhat confused
• If you can't be positive, run and sue like this
• Tentative jokes, lacking power -- clean, but lacking power
• Hesitant superior takes on new nurse
• University trained nurse lacking in self-confidence