rigidity

Rigidity is a quality found in people and objects that don't bend — though they might eventually break.

When we see rigidity in a person, it means they're severe, like a teacher who punishes you for being late even though you were busy saving an orphan from a polar bear. Rigidity means no bending — in that case, of the rules. Objects and substances can have rigidity as well, if they literally won't bend. Rigidity means about the same thing as inflexibility, another word that describes rock-solid, unyielding people and substances.

Definitions of rigidity
  1. noun
    the physical property of being stiff and resisting bending
    synonyms: rigidness
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    types:
    inflexibility, inflexibleness
    a lack of physical flexibility
    type of:
    inelasticity
    the lack of elasticity
  2. noun
    the quality of being rigid and rigorously severe
    synonyms: inflexibility, rigidness
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    Antonyms:
    flexibility, flexibleness
    the quality of being adaptable or variable
    type of:
    unadaptability
    the inability to change or be changed to fit changed circumstances
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