Definition of rigid adjective from the Oxford Advanced American Dictionary

      

    rigid

     adjective
    adjective
    NAmE//ˈrɪdʒəd//
     
     
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  1. 1(often disapproving) (of rules, methods, etc.) very strict and difficult to change synonym inflexible The curriculum was too narrow and too rigid. His rigid adherence to the rules made him unpopular.
  2. 2(of a person) not willing to change their ideas or behavior synonym inflexible rigid attitudes
  3. 3 (of an object or substance) stiff and difficult to move or bend a rigid support for the tent She sat upright, her body rigid with fear.
NAmE//rɪˈdʒɪdət̮i//
 
noun [uncountable, countable] the rigidity of the law on this issue the rigidity of the metal bar
NAmE//ˈrɪdʒədli//
 
adverb The speed limit must be rigidly enforced. She stared rigidly ahead.
See the Oxford Advanced Learner's Dictionary entry: rigid