1. Postpone doing what one should be doing
   "He did not want to write the letter and shillyshallied for days";
   - procrastinate, stall, drag one's feet [informal], drag one's heels [informal], dilly-dally [informal], dillydally [informal], shilly-shally [informal]
    
2. Be uncertain and vague
   "Stop shillyshallying and make a decision";
   - shilly-shally [informal]

1. The act of procrastinating; putting off, delaying or deferring an action to a later time
   "His shillyshally in making a decision cost the company valuable time";
   - procrastination, cunctation [archaic], shilly-shally [informal]

Derived forms: shilly-shallies, shillyshallies, shillyshallying, shilly-shallied, shillyshallied, shilly-shallying

Type of: blow hot and cold [informal], delay, holdup, hover, oscillate, vacillate, vibrate