• rigorous

    A rigorous teacher expects a lot from their students; therefore, they can be strict with rules and demand that their students learn a lot of information.

  • rigid

    A rigid person, such as a teacher or parent, has very strict rules that others must follow; they are unlikely to change or bend those rules.

  • rigidify

    become rigid

  • rigidity

    the physical property of being stiff and resisting bending

  • rigor

    something hard to endure

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