hinky

or hin·key, hink·ty, hinc·ty

[hing-kee]
adjective, hin·ki·er, hin·ki·est. Slang.
  1. acting in a nervous or very cautious way.
  2. suspicious: Whenever he agrees with me, you know something hinky is going on!
  3. snobbish; haughty.

Origin of hinky

First recorded in 1920–25; origin unknown
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of hinkey