common sense

/K AA1 M AH0 N S EH1 N S/
noun
  1. 1

    Ordinary sensible understanding; one's basic intelligence which allows for plain understanding and without which good decisions or judgments cannot be made.

  2. 2

    An internal sense, formerly believed to be the sense by which information from the other five senses is understood and interpreted.

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Source: https://en.wiktionary.org/wiki/common%20sense