Icelandic

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Etymology

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From kex +‎ ruglaður, literally crazy/confused as a cookie.

Adjective

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kexruglaður

  1. (informal) completely out of it, extremely confused and disoriented due to being under the influence of drugs
  2. (informal, often humorous) an insane person, a nutcase, deranged
  3. (informal, describing things) insane, ridiculous, impractical