Rigid \Rig"id\, a. [L. rigidus, fr. rigere to be stiff or numb:
   cf. F. rigide. Cf. {Rigor}. ]
   1. Firm; stiff; unyielding; not pliant; not flexible.
      
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            Upright beams innumerable
            Of rigid spears.                      --Milton.
      
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   2. Hence, not lax or indulgent; severe; inflexible; strict;
      as, a rigid father or master; rigid discipline; rigid
      criticism; a rigid sentence.
      
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            The more rigid order of principles in religion and
            government.                           --Hawthorne.
      
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   Syn: Stiff; unpliant; inflexible; unyielding; strict; exact;
        severe; austere; stern; rigorous; unmitigated.
        
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