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Noun: yo-yo  'yow'yow
  1. A toy consisting of a spool that is reeled up and down on a string by motions of the hand
    "The child skilfully performed tricks with her yo-yo"
     
  2. [N. Amer, informal] A stupid incompetent person
    "He's a bit of a yo-yo, but who in management isn't?";
    - dimwit [informal], nitwit [informal], half-wit [informal], doofus [N. Amer, informal], numpty [UK, informal], noodle [informal], nellie [informal], dingleberry [US, informal], donkey [informal], nelly [informal], dufus [N. Amer, informal], simp [N. Amer, informal]
     
  3. Something that fluctuates up and down or between extremes
    "The stock market has been a yo-yo this year"

Derived forms: yo-yos

Type of: plaything, simple [archaic], simpleton, toy

Encyclopedia: Yo-yo