guts - definition and synonyms

noun [plural] informal 

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  1. 1
    the quality of being brave and determined

    That’s what you need to be a referee – guts.

    have the guts to do something:

    She had the guts to go for what she wanted.

    it takes guts to do something:

    It takes a lot of guts and hard work to get where he is.

  2. 2
    all the organs inside your body, especially the ones in the stomach area

    The doctors sewed his guts back together.

  3. 3
    the most important parts of a system, plan, or machine

    That’s basically the guts of Darwin’s theory.

See also